The Adventures of Superman
|In story information|
|Element of stories featuring||Superman|
Kryptonite is a fictional material that appears primarily in Superman stories. In its best-known form, it is a green, crystalline material originating from Superman's home world of Krypton that emits a unique radiation that weakens Superman, but is generally harmless to humans when exposed to it in the short term but deadly in the long term. There are other varieties of kryptonite, such as red and gold kryptonite, which have different but still generally negative effects on Superman. Due to Superman's popularity, kryptonite has become a byword for an extraordinary exploitable weakness, synonymous with "Achilles' heel". Batman and Lex Luthor are two notable individuals who have pieces of kryptonite with them, with the former being trusted by Superman himself to stop Superman in case he goes rogue or does something out of the ordinary and the latter to ward off Superman's presence and at times incorporating it into weapons to try to kill him.
An unpublished 1940 story titled "The K-Metal from Krypton", written by Superman creator Jerry Siegel, featured a prototype of kryptonite. It was a mineral from the planet Krypton that drained Superman of his strength while giving superhuman powers to mortals. This story was rejected because in it Superman reveals his identity to Lois Lane.
The mineral known as kryptonite was first officially introduced in the radio serial The Adventures of Superman, in the story "The Meteor from Krypton", broadcast in June 1943. An apocryphal story claims that kryptonite was introduced to give Superman's voice actor, Bud Collyer, the possibility to take a vacation at a time when the radio serial was performed live. In an episode where Collyer would not be present to perform, Superman would be incapacitated by kryptonite, and a substitute voice actor would make groaning sounds. This tale was recounted by Julius Schwartz in his memoir. However, the historian Michael J. Hayde disputes this: in "The Meteor From Krypton", Superman is never exposed to kryptonite. If kryptonite allowed Collyer to take vacations, that was a fringe benefit discovered later. More likely, kryptonite was introduced as a plot device for Superman to discover his origin.
In the radio serial, Krypton was located in the same solar system as Earth, in the same orbit, but on the opposite side of the Sun. This provided an easy explanation for how kryptonite found its way to Earth.
Kryptonite was incorporated into the comic mythos with Superman #61 (November 1949). Editor Dorothy Woolfolk stated in an interview with Florida Today in August 1993 that she "felt Superman's invulnerability was boring."
The only substance in the universe that kryptonite radiation (from any variety) cannot penetrate is lead.
Forms, colors and effects 
Various forms of the fictional material have been created over the years in Superman publications and programs.
|Green kryptonite||Originally red in color, the material debuted in Superman #61 (Nov. 1949) and did not adopt its characteristic green hue until Action Comics #161 (Aug. 1951). Green kryptonite weakens Superman and other Kryptonians. It can and will kill them with long-term exposure. Kryptonians under green kryptonite's effects experience severe muscular weakness, usually to the point of collapse, and excruciating pain, with both conditions progressively intensifying. They often develop a fever and eventually will lose consciousness before death. The mineral will also gradually turn a Kryptonian's skin and blood green.
Although canonical depictions vary widely, the majority of accounts maintain that, although green kryptonite exposure victims experience severe weakness and pain, exposure in itself does not eradicate the victim's superpowers, except those related to physical strength. Therefore, victims retain most of their visual and sensory powers, although green kryptonite itself appears impervious to damage by heat vision. Green kryptonite exposure does not compromise the subject's invulnerability to other forms of injury; therefore, it is not a practical strategy for a villain to first expose the victim to green kryptonite, then kill them with a gun or other conventional weapon. However, some enemies have occasionally used weapons with green kryptonite projectile ammunition, which can not only seriously wound a Kryptonian, but also make surgical treatment difficult, with the resistance to injury in a yellow sun environment being a major complication. In one such incident, the surgeon was forced to give Superman a controlled exposure to the mineral in order to make the proper incisions to remove all the internal bullet fragments. Some accounts maintain paralysis is an effect of green kryptonite exposure, although most depictions show victims still capable of limited movement. However, the effects of green kryptonite are not cumulative: a Kryptonian who can be removed from kryptonite exposure in time will fully recover from its effects with no lasting medical repercussions no matter how many instances of surviving exposures. Kryptonian characters have been shown to become immune to the effects of green kryptonite due to either long-term absorption of sunlightor extremely high short-term exposure to the Sun.Post-Crisis sources establish that green kryptonite is cumulatively harmful to humans; with sufficient long-term exposure, it can result in cancer, as Lex Luthor discovered, much to his dismay, from a ring with a green kryptonite jewel he wore to ward off Superman's presence. At least one comic, however, also mentioned that kryptonite was being investigated as a possible cancer treatment.
|Positive kryptonite||Debuted in the last episode of Adventures of Superman “All That Glitters” (Season 6, episode 13) on April 28, 1958. Professor Pepperwinkle isolates positive kryptonite from green kryptonite. It appears as yellow capsules on screen. It is said to be what gives Superman his powers and is also shown to give humans the abilities of Superman when both Lois Lane and Jimmy Olsen ingest it. This turns out to be a hallucination Jimmy Olsen had upon being hit in the head with a sandbag.|
|Negative kryptonite||Debuted in the last episode of Adventures of Superman “All That Glitters” (Season 6, episode 13) on April 28, 1958. Professor Pepperwinkle isolates negative kryptonite from green kryptonite. It is said to have the ability to take away Superman's powers. This turns out to be a hallucination Jimmy Olsen had upon being hit in the head with a sandbag.|
|Red kryptonite||Debuted in Adventure Comics #255 (Sept. 1958). Originally red kryptonite simply weakened Superman, but to a greater degree than green kryptonite. Red kryptonite was later shown to cause odd behavior or bizarre transformations, albeit temporary and non-fatal. The effects of red kryptonite typically last anywhere from one day (24 hours) to two days (48 hours), although in some accounts the effects may persist up to three days (72 hours) or even several weeks. In the Smallville spin-off, red kryptonite affects Clark's mental state and the effect wears off as soon as he stops being in close proximity to the stone. Clark becomes selfish and uses his powers recklessly. He is also shown drinking and philandering. On Lois & Clark: The New Adventures of Superman, red kryptonite initially makes Superman apathetic, while another piece transfers his superpowers into other humans.|
|Anti-kryptonite/fool's kryptonite||Debuted in Action Comics #252 (May 1959). Resembles green kryptonite, but is harmless to Kryptonians; however, it has the same effect as green kryptonite on humans. Anti-kryptonite is also the power source for one version of the character: Ultraman, Superman's evil counterpart from an antimatter universe.|
|X-kryptonite||Debuted in Action Comics #261 (Jan. 1960). Created by Supergirl (Kara Zor-El) in an unsuccessful attempt to find an antidote to green kryptonite. Harmless to Kryptonians, the mineral gives normal lifeforms superhuman abilities, as in the case of Supergirl's pet, Streaky the Supercat. Revised in Superman Family #203 (Oct. 1980) to have the same effect as the green variety on Kryptonians.|
|Blue kryptonite||Debuted in Superman #140 (Oct. 1960). An imperfect variety of kryptonite which affects the imperfect Superman duplicate Bizarro, the members of the Bizarro League and the inhabitants of htraE, the Bizarro World, in the same way that green kryptonite affects Kryptonians. Kryptonians, however, are unaffected by it. The only substance in the universe that its radiation cannot penetrate is imperfect lead (this weakness is unique to this variety). In the Super Friends franchise, blue kryptonite works as an antidote to the random and bizarre effects of red kryptonite.|
|White kryptonite||Debuted in Adventure Comics #279 (Dec. 1960). Kills all plant life from any planet in the universe.|
|Red-green kryptonite (first version)||Debuted in Action Comics #275 (April 1961). An alloy created by the villain Brainiac, red-green kryptonite caused Superman to mutate, temporarily growing a third eye in the back of his head.|
|Gold kryptonite||Debuted in Adventure Comics #299 (Aug. 1962). Kryptonite affected by atomic radiation, capable of permanently removing a Kryptonian's ability to process yellow sunlight, which nullifies all superpowers. In Post-Crisis stories, this variety only removes a Kryptonian's superpowers temporarily (in Superman II, the crystal chamber from Superman's Fortress of Solitude exhibited the same effect, although this process was reversed via Jor-El's green crystal).|
|Red-green-blue-gold kryptonite||Debuted in Superman #162 (July 1963). An imaginary story in which Superman combines the minerals to power an intelligence-expanding device. An explosion occurs and the hero is split into two separate beings ("Superman-Red" and "Superman-Blue"), both of whom possess enhanced intelligence.|
|Silver kryptonite||Debuted in Superman's Pal, Jimmy Olsen #70 (July 1963). Revealed by Jimmy Olsen to be a hoax. In Post-Crisis stories, silver kryptonite first appeared in Superman/Batman #46 (April 2008), modeled after the version that appeared in the Smallville TV series in season 5 episode 7 "Splinter", where Clark suffers paranoid delusions. Silver kryptonite causes Kryptonians to suffer from altered perceptions, loss of inhibitions and extreme hunger cravings. On the Supergirl TV series, this kryptonite causes Superman to hallucinate his "greatest fear" of an attacking General Zod during the final episode of season 2, "Nevertheless, She Persisted".|
|Jewel kryptonite||Debuted in Action Comics #310 (March 1964). Made from the fragments of Krypton's Jewel Mountains. Amplifies the psychic powers of the criminals imprisoned in the Phantom Zone, allowing them to project illusions or perform mind control.|
|Bizarro-red kryptonite||Debuted in Superman's Pal, Jimmy Olsen #80 (Oct. 1964). Affects humans in the same way that red kryptonite affects Kryptonians.|
|Red-green kryptonite (second version)||Debuted in Superboy Comics #121 (June 1965). This variety caused Superboy to lose his superpowers permanently, but the Phantom Zone criminal Vakox unwillingly cured him, thus restoring his superpowers.|
|Red-gold kryptonite||Debuted in Superman #178 (July 1965). Temporarily deprives Kryptonians of their memories.|
|Magno-kryptonite||Debuted in Superman's Pal, Jimmy Olsen #92 (April 1966). Created by the villain Mr. Nero, this variety is magnetically attracted to all substances originally from Krypton.|
|Red-green-gold kryptonite||Debuted in Superman #192 (Jan. 1967). An imaginary story in which the alloy permanently removes Superman's powers and all memories of himself as Superman.|
|Slow kryptonite||Debuted in The Brave and the Bold #175 (June 1981). A modified variety of green kryptonite produced by the supervillain Metallo that affects humans in a manner similar to how green kryptonite affects Kryptonians.|
|Kryptonite-X||Debuted in The Adventures of Superman #511 (April 1994). A one-time fluke, kryptonite-X was created when the Eradicator filtered a harmful barrage of kryptonite discharged by the villain the Cyborg Superman at Superman. The result was beneficial for Superman, supercharging him and restoring his ability to process solar radiation.|
|Clear kryptonite||Debuted in Smallville’s “Visage” (Season 2, episode 11) on January 14, 2003. Clear kryptonite is green kryptonite that has been neutralized of all radiation. It is harmless to everyone, including Kryptonians. Both Kal-El's ship and Bizarro have transmuted green kryptonite to clear kryptonite.|
|Pink kryptonite||Debuted in Supergirl (vol. 4) #79 (April 2003). Pink kryptonite seemingly turns Kryptonians into homosexuals. This type of kryptonite was mentioned in a single panel in a story that was a satire of the plots of many Silver Age comic book stories (such as those listed above) which featured some strange new variety of kryptonite. In the Justice League Action short "True Colours", it switches a Kryptonian's gender.|
|Black kryptonite||Debuted in Smallville’s “Crusade” (Season 4, episode 1) on September 22, 2004. In Pre-Flashpoint continuity, it could split a Kryptonian into two separate beings: one good and the other evil (the kryptonite manufactured by the villains of Superman III had just such an effect on Superman). In Dark Nights: Metal – The Batman Who Laughs #1, set on the Dark Multiverse's Earth −22, a Batman corrupted by the Joker creates a modified strand of black kryptonite. He tests it first on Supergirl, causing her to murder her family before dying herself. He then uses it again on Superman and Superboy, who literally tear Lois Lane apart before they kill each other.|
|Orange kryptonite||Debuted in Krypto the Superdog #4 (Feb. 2007). Provides super-abilities to any animal that comes into contact with it for one day (24 hours).|
|Periwinkle kryptonite||Debuted in Superman Family Adventures #9 (March 2013). A non-canonical variety. Exposure to periwinkle kryptonite causes Kryptonians to lose all their inhibitions.|
|Platinum kryptonite||Debuted in "True Strength", a story from Batman Secret Files #001 (Dec. 2018) and Batman (vol. 3) #85 (Feb. 2020). From "an impossible universe inside the Phantom Zone, on an impossible planet". When touched by a normal human, platinum kryptonite changes their cells in an instant, giving them Kryptonian superpowers for life. Used by Batman to restore Gotham Girl's powers.|
In other media
- The Adventures of Superman (1952–1958) featured kryptonite in the episodes "Panic in the Sky", "The Defeat of Superman", "Superman Week", "The Deadly Rock", "The Magic Secret", "The Gentle Monster" and "All That Glitters".
- Superboy (1988–1992) featured green kryptonite in the episodes: "Kryptonite Kills" and "Metallo", "Bride of Bizarro", "Kryptonite Kid", and "Obituary for a Super-Hero". The red variety was featured in the episode "Super Menace". A Bizarro white variant was featured in the episode "The Battle with Bizarro", which heals the title character.
- Lois & Clark: The New Adventures of Superman (1993–1997) featured green kryptonite in the episodes "The Green, Green Glow of Home", "Barbarians at the Planet", "The House of Luthor", "Metallo", "Top Copy", "Tempus Fugitive" and "Battleground Earth". The red variety was featured in the episodes "Individual Responsibility", "Ultrawoman" and "Lethal Weapon".
- Smallville (2001–2011) featured kryptonite on a regular basis. A large quantity of the green variety descends to Earth in a meteor shower, arriving in the town of Smallville, Kansas with the spaceship containing the infant Kal-El. The material is colloquially referred to by Smallville residents as "meteor rock", but is eventually called "kryptonite" by Clark Kent once he discovers his origins in season two episode "Visitor" (in real life, the area near Brenham, Kansas is known as the site of a major meteorite strike between 10,000 and 20,000 years ago). Aside from being harmful to Clark Kent, the mineral produces bizarre changes in flora and fauna. It also occasionally bestows metahuman abilities on humans depending on the circumstances of their exposure to it, such as a girl treated for a rare bone disease acquiring shapeshifting powers. These people are commonly known by the inhabitants of Smallville as "Meteor Freaks". The green variety of the mineral appears in several episodes every season, although other varieties appear, including: red in "Red" (2002), "Exodus", "Exile", "Phoenix" (2003), "Unsafe" (2005), "Crimson" (2007) and "Upgrade" (2010); black, formed when superheating green kryptonite in "Crusade" (2004) and "Doomsday" (2009); silver in "Splinter" (2005); blue in "Blue" (2007), "Persona" (2008), "Kandor" (2009), "Salvation" (2010) and "Harvest" (2011); as a gem in "Persuasion" (2010) and gold (introduced in Earth Two) in "Luthor", "Prophecy" and "Finale" (2011). Smallville was the first appearance of a black kryptonite that would split a person into their good and evil sides, before later being brought into the comic book canon in Supergirl (vol. 5) #2 (Oct. 2005).
- Kryptonite has made several appearances in the Arrowverse:
- Supergirl (2015–present) features green kryptonite in the episodes "Pilot", "Stronger Together", "Hostile Takeover", "For the Girl Who Has Everything", "Distant Sun" and "Immortal Kombat". The DEO manages to synthesize and create blue kryptonite which is featured in the episode "Bizarro". Red kryptonite is featured in the episode "Falling" as a failed attempt to recreate green kryptonite by Maxwell Lord. Silver kryptonite is featured in the episode "Nevertheless, She Persisted". In season 3, the black kryptonite is pivotal to its arc, first appearing in the episode "The Fanatical", in which it is being referred to as Harun-El by Kryptonians. The Worldkiller Coven from Krypton, headed by dark priestess Selena, schemes to use the Harun-El to terraform Earth into a Krypton-like planet for Kryptonians to inhabit. The protagonists uses the Harun-El to split the Worldkiller Coven's servant, Reign, from her human alter-ego Samantha Arias. By the end of the season finale, it is revealed that Supergirl's being is also divided after her exposure to it during her final battle with Reign. In season 4, Lena Luthor develops a serum derived from Harun-El, and Lex Luthor, Agent Liberty and James Olsen develop metahuman abilities after being injected with it such as enhanced speed, durability, strength, and a healing factor.
- Green kryptonite appears briefly in the crossover event "Crisis on Earth-X". During a confrontation with Overgirl, Supergirl's Earth-X counterpart, Oliver Queen fires an arrow at her containing a kryptonite arrowhead, impaling Overgirl's shoulder. An astonished Supergirl asks Oliver why he has a kryptonite arrow, to which Oliver replies: "In case an evil you ever showed up!"
- Kryptonite also appears in the "Crisis on Infinite Earths" crossover event: In Part Two, the Bruce Wayne of Earth-99 keeps kryptonite in the Batcave and had used it to kill his Earth's Superman. He uses it on Supergirl, but is killed by Earth-1's Kate Kane before he can kill her. Kate then collects the kryptonite in his possession. In Part Three, Batwoman intended to use the kryptonite on Supergirl to stop a dangerous plan of hers, but instead reveals it to her as an act of faith. Supergirl tells her to keep it, saying that she "[has] the courage" that Kate will never have to use it.
- In the Batwoman episode "A Secret Kept From All the Rest", Lucius Fox states in his journal that green kryptonite is the only thing capable of penetrating the Batsuit. In the season 1 finale episode "O, Mouse!", as Alice tries to locate kryptonite, Luke finds it and manages to destroy it. But Kate reveals to both of them that she has another kryptonite rock given to her from Crisis. The bullet was later used by Hush on Ryan Wilder when she became Batwoman. This caused her pain until she was treated when the plant she owned turned out to be a Desert Rose from Coryana.
- In Superman & Lois, Superman is targeted by "The Stranger", who uses green kryptonite against him in their initial fight. Meanwhile, Morgan Edge unearths a large batch of X-kryptonite from a Smallville mine, which has made the local population susceptible for the Eradicator, a device which Edge uses to implant Kryptonian consciousnesses into humans. Eventually it is revealed that the Stranger is John Henry Irons from an alternate Earth where Superman led a superpowered army to attack Metropolis as he makes it his mission to defeat the Earth-Prime Superman and thwart Edge's experiments before the same thing can happen again.
- The Brady Kids (1972–1973) featured green kryptonite in the episode "Cindy's Super Friend" which shows Clark Kent attempting to become Superman in the Kids' clubhouse, only to be incapacitated by a piece of green kryptonite used as part of a rock collection.
- Super Friends (1973–1986) features kryptonite in the episodes "Super Friends: Rest in Peace" ("Krypton steel"); "Darkseid's Golden Trap" (gold); "Terror From the Phantom Zone" (blue, green, and red); "Return of the Phantoms" (green); "Rokan: Enemy from Space" (green); "Bazarowurld" (red and blue); "Revenge of Bizarro" (red and blue); Will the World Collide?" (green); "Uncle Mxyzptlk" (red); "The Death of Superman" (green); "Batman: Dead or Alive" (green).
- Superman (1988) features a kryptonite ring worn by Lex Luthor. On the episode "The Hunter", Superman's enemy transforms his body into kryptonite.
- Superman: The Animated Series (1996–2000) offers an explanation of the effect of the material on Superman. This series and The New Batman Adventures (1997–1999) showcase a three-part crossover story arc called "World's Finest" that demonstrates the effect of kryptonite poisoning on humans.
- Justice League (2001–2004) explores the same theme where Lex Luthor develops cancer from his long term exposure to a piece of kryptonite he kept with him without taking precautions to contain it, as seen in the episode "Injustice for All", unlike Batman who keeps it in a lead pocket case, a strong deterrent against the object in his utility belt.
- In Batman Beyond (1999–2001) the two-part episode "The Call" reveals that kryptonite has been kept safe in the distant future as a deterrent against Superman due to the hero's past as a rogue agent under Darkseid's mind manipulation.
- Krypto the Superdog (2005–2006) features green, red and a purple-spotted variation.
- Legion of Super Heroes (2006–2008) features green kryptonite.
- Young Justice (2010–2013, 2018) features green kryptonite in the episode "Auld Acquaintance".
- In Batman: The Brave and the Bold episode "Battle of the Superheroes!", Superman is infected with a red kryptonite necklace secretly given to Lois Lane by Lex Luthor, which causes Superman to become evil. Now Batman must work with Krypto the Superdog to hold off Superman until the effects of the red kryptonite wear off.
- In Lego DC Super Hero Girls, Lena Luthor developed a series of kryptonites with one of six different colors each, which effect everyone that comes near them by changing their emotions, such as anger, sadness, fear, distrust and forgetfulness, while the green ones only act as normal kryptonite that only affects Supergirl. She is usually seen assisting the Female Furies and Eclipso, though the latter of which Lena always hinders her plans in the end, hindering her own plans in the process.
- In DC Super Hero Girls, green kryptonite has been used by Catwoman to weaken Supergirl and by Lex Luthor to trap both Superman and Supergirl in capsules, while Ra's al Ghul once used red kryptonite to mind control Supergirl into destroying a boy band concert.
- In Superman (1978) Lex Luthor (Gene Hackman) deduces that a meteorite found in Addis Ababa is actually a radioactive piece of the exploded planet Krypton. Luthor uses the mineral to weaken Superman (Christopher Reeve), who is saved by Luthor's lover Eve Teschmacher (Valerie Perrine).
- In Superman III (1983) billionaire Ross Webster (Robert Vaughn) orders the creation of synthetic green kryptonite. Computer programmer Gus Gorman (Richard Pryor) uses tar to compensate for an unknown component of kryptonite, causing the newly created mineral to eventually turn Superman evil and split the hero into two beings (making its effects more in line with red and black kryptonite). Gorman's "supercomputer" later fights Superman and uses a kryptonite ray.
- In Superman Returns (2006) Lex Luthor (Kevin Spacey) steals the Addis Ababa L9 Pallasite meteorite and uses kryptonite to create a new Kryptonian landmass and a shard for use against Superman. The film describes kryptonite's formula as "sodium lithium boron silicate hydroxide with fluorine". A year after the film was released, a substance with a similar formula was discovered, jadarite, a coincidence which led to media attention. The new mineral, unlike the fictional material in the movie, does not contain fluorine and does not have a green glow, an effect normally associated with nuclear radiation in both real life and popular culture.
- In Justice League: The New Frontier (2008), Batman mentions he keeps some kryptonite in case he needs to fight Superman.
- In Justice League: Crisis on Two Earths (2010) an alternate universe version of Lex Luthor uses blue kryptonite against the villain Ultraman.
- In Justice League: Doom (2012), the villain Metallo wounds Superman with a kryptonite bullet, but he is saved by the JLA.
- In Batman v Superman: Dawn of Justice (2016), green kryptonite is discovered by men working for Lex Luthor (Jesse Eisenberg) at the bottom of the Indian Ocean (after Superman's battle with the World Engine in Man of Steel) and experimented with by Luthor, who learns of its harmful effect on Kryptonians when the corpse of General Zod is exposed to it. The kryptonite is then stolen from Luthor by Batman (Ben Affleck), who uses it to create kryptonite gas pellets and a kryptonite-tipped spear, both of which he later uses in battle with Superman (Henry Cavill). Doomsday is also shown to be weakened by kryptonite, allowing Superman to use the spear to kill him in the film's climax.
- In Superman: Atari 2600 (1978) Luthor has created kryptonite satellites and scattered them around Metropolis that take away Superman's ability to fly when touched. Superman must then walk around Metropolis until he finds and meets Lois Lane to regain his powers.
- In the 1988 Kemco Superman game for the Nintendo Entertainment System, defeating random enemies may cause red or green Kryptonite to appear, which must be avoided or else it will damage the player's health. A blue crystal restores the player's health, explained in the manual as Kryptonian power crystals akin to the 1978 film.
- Superman 64 (1999) it appears as kryptonite fog, coined as an excuse for the game's poor draw distance.
- In the crossover fighting game Mortal Kombat vs DC Universe (2008) kryptonite weakens Superman when exposed, while it makes his Mortal Kombat universe counterpart, the thunder god Raiden, stronger.
- In Lego Batman 2: DC Super Heroes (2012) kryptonite is used to power Lex Luthor's weapon, the "Deconstructor".
- Scribblenauts Unmasked: A DC Comics Adventure (2013) showcases the material in different forms.
- Kryptonite is one of the foundation elements in Lego Dimensions.
- Injustice: Gods Among Us (2013) features a kryptonite laser designed as a fail-safe against Superman should he turn against humanity.
- Gold and green kryptonite appear in the story mode of Injustice 2.
- "Kryptonite" by 3 Doors Down (2000).
- "Party Up (Up in Here)" by DMX (2000).
- "Kryptonite (I'm on It)" by rap group Purple Ribbon All-Stars (2006).
- "Kryptonite" By Mario ft. Rich Boy from his third studio album Go
- "Fashion Is My Kryptonite" by Bella Thorne and Zendaya (2012).
- "Ready or Not" by Bridgit Mendler (2012).
- "Shut Up and Dance" by Walk the Moon (2014).
- "Get Your Cape On" by Jordyn Kane (2015).
- Pocket Full of Kryptonite, a 1991 album by Spin Doctors. The album's title is drawn from a line in the song "Jimmy Olsen's Blues", which is featured on the album.
- In the title track for his album Ten Feet Tall and Bulletproof, Travis Tritt sings about picking a fight when he feels like Superman "only to find my opponent is holding kryptonite".
- The 2000 song, "Superman (It's Not Easy)" by "Five for Fighting" mentions kryptonite: "...digging for Kryptonite on this one way street.".
- The Genesis song "The Carpet Crawlers" mentions kryptonite: "Mild-mannered Supermen are held in kryptonite...".
- "There's a Moon in the Sky" by The B-52's mentions kryptonite: "you get a mouth, a mouthful of red kryptonite".
- "Jam on It" by Newcleus features a "battle" between the band and Superman, and they "rock his butt with a 12-inch cut called disco kryptonite."
- "One Thing" by One Direction mentions kryptonite: "you're my kryptonite"
- Horton, Andrew; McDougal, Stuart Y.; Braudy, Leo (1998). Play it Again, Sam: Retakes on Remakes. Berkeley, California: University of California Press. p. 287. ISBN 0520205936.
- Jones, Gerard (2004). Men Of Tomorrow: Geeks, Gangsters, and the Birth of the Comic Book. New York: Basic Books. pp. 181–183. ISBN 0465036562.
- Hayde, Michael J. (2009). Flights of Fantasy: The Unauthorized but True Story of Radio & TV's Adventures of Superman. BearManor Media. ISBN 9781593933449.
"Only one arc in 1943 managed to transcend its era: "The Meteor from Krypton." Debuting on June 3, it marked the debut of kryptonite..."
- Schwartz, Julius (2000). Man of Two Worlds: My Life in Science Fiction and Comics. HarperEntertainment. ISBN 0-380-81051-4.
- Hayde, Michael J. (2009). Flights of Fantasy: The Unauthorized but True Story of Radio & TV's Adventures of Superman. BearManor Media. ISBN 9781593933449.
"Since Superman’s life isn’t threatened — the meteorite never leaves the doctor’s custody — it’s likely that Lowther’s primary intent was to create a means for Superman to discover his own origin."
- Bill Finger (w), Al Pastino (p). "Superman's Return to Krypton!" Superman #61 (November 1949), DC Comics
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- Fleisher, Michael L. (2007). The Original Encyclopedia of Comic Book Heroes Volume Three: Superman. DC Comics. pp. 369–375. ISBN 1-4012-1389-8.
- Greenberger, Robert; Pasko, Martin (2010). The Essential Superman Encyclopedia. Del Rey. pp. 174–177. ISBN 978-0-345-50108-0.
- Byrne, John (w), Byrne, John (p), Kesel, Karl (i). "Bloodsport!" Superman v2, #4: 22 (April 1987), DC Comics
- "Superman II". Who's Who: The Definitive Directory of the DC Universe. 1 (22): 29. Dec 1986.
- Mark Waid (w), Alex Ross (a). Kingdom Come: 129/4 (1997), New York: DC Comics, ISBN 1563893304
- Grant Morrison (w), Frank Quietly (p). All-Star Superman #1 (January 2006), DC Comics
- John Byrne (w), Dick Giordano (p). "Games People Play" Action Comics #600: 8 (May 1988), DC Comics
- Fleisher, Michael L. (2007). The Original Encyclopedia of Comic Book Heroes, Volume Three: Superman. DC Comics. pp. 369–375. ISBN 1-4012-1389-8.
- Grant Morrison (w), Frank Quietly (p). JLA: Earth 2: 73/1 (September 2000), DC Comics
- Geoff Johns, Richard Donner (w), Adam Kubert (p). "Last Son" Action Comics Annual #11 (July 2008), DC Comics
- Scharping, Nathaniel (April 4, 2018). "Space Metal Has Captivated Humanity for Ages". Discover.
- "'Kryptonite' discovered in mine", BBC News, 24 Apr 2007
- Washington Post
- Staskiewicz, Keith (2 July 2015). "'Batman v Superman: Dawn of Justice': 6 EW exclusive photos". Entertainment Weekly. Retrieved 2 October 2017.
- Storm, Ian (11 September 2005). "3 Doors Down – The Better Life (album review 4)". Sputnikmusic. Retrieved 2 October 2017.
- "Big Boi Presents...Got Purp?, Vol. 2 – Big Boi, Purple Ribbon All-Stars". AllMusic. Retrieved 2 October 2017.
- "Pocket Full of Kryptonite – Spin Doctors". AllMusic. Retrieved 2 October 2017.
|Look up Appendix:DC Comics/Kryptonite in Wiktionary, the free dictionary.|