Teenage Mutant Ninja Turtles (2003 TV series, season 7)

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TMNT: Back to the Sewer
Season 7
Country of originUnited States
No. of episodes14
Original networkThe CW4Kids
Original releaseSeptember 13, 2008 (2008-09-13) –
March 27, 2010 (2010-03-27)
Season chronology
← Previous
Season 6
List of episodes

The seventh and final season of Teenage Mutant Ninja Turtles, titled Back to the Sewer or TMNT: Back to the Sewer, aired on Saturday mornings on the CW4Kids on CW Network in 2008–2009. With this season, the show moved from Fox's 4Kids TV lineup to the CW. The season began with the episode "Tempus Fugit" which aired on September 13, 2008. It is followed by the TV special Turtles Forever.


Cody Jones is able to finally repair the Time Window, but parts with the Turtles and Splinter can return to 2006. However, Viral, who had survived her defeat in the previous season, hacks into the time window, taking control of it and sending the Turtles, Splinter and Serling (who accidentally fell in) to various eras in attempts to kill them. Just as the group is able to return home, Viral attacks Splinter, shattering him into countless bytes of data scattered across the Internet. Serling and the Turtles resolve to recover Splinter's bytes and return him to his whole self by digitizing themselves and entering cyberspace to find them.

Viral is forcibly assimilated into a digital copy of Ch'rell, who had done so prior to his attempted departure from Earth in the 3rd-season finale. This forms a new incarnation of the Shredder known as the "Cyber Shredder," who employs a new Foot Clan with Khan as his first lieutenant. Shredder makes several attempts to escape from cyber space and enter the real world, often harassing the Turtles during their attempts to locate Splinter's data.

In the season's finale, Splinter is recompiled and returned to his sons, who decide to celebrate April and Casey's wedding. Dozens of the Turtles' allies and friends attend the ceremony, which is violently attacked by the Foot Clan, led by the Shredder, who has finally entered the physical world. In the midst of a massive battle between the Turtles' allies and the Foot, Donatello is able to destroy the Shredder. The wedding finally ends, in front of the Turtles, Splinter, and many other allies (including some who watch from afar; such as Agent Bishop, Cody, etc.).

Voice Cast[edit]

  • Michael Sinterniklaas as Leonardo: the leader of the Turtles who helped his brothers to find Splinter's data bits after Viral blasted him apart into Cyberspace. (12 episodes)
  • Sam Riegel as Donatello: a genius engineer who blamed himself for Splinter's decompiling... up until "Hacking Stockman" and vowed to restore his bits from Cyberspace. (12 episodes)
  • Frank Frankson as Raphael: the Turtles' hotheaded member and Leo's second-in-command who often argues with him. (13 episodes)
  • Wayne Grayson as Michelangelo: the Turtles' youngest member and a source of comic relief who is a member of the Justice Force as the "Turtle Titan". (13 episodes)


  • Veronica Taylor as April: the Turtles' ally who enters a relationship with Casey.
  • Marc Thompson as
    • Casey: the Turtles' ally who enters a relationship with April.
    • Serling: Cody's robot servant who becomes constantly infuriated by the turtles.
  • Scottie Ray as Ch'rell/The Cyber Shredder: a new incarnation of Ch'rell... who was based on the real Demon Shredder.


  • Darren Dunstan as Splinter: the Turtles' sensei and adopted father who deleted by Viral and sent across Cyberspace.
  • Eva Kaminsky as Viral: a computerized system and a formal ally of the late Sh'Okonabo, who later fuses with Ch'rell's backup memory to become the Cyber Shredder.
  • Greg Carey as Hun: a hulking gangster who and the leader of the Purple Dragons.
  • Sean Schemmel as Master Khan: a second in command of the Foot Clan who apparently comes from the ranks of the Foot Elite, the personal bodyguard of the Cyber Shredder who is based on the Utrom Shredder based on the Demon one.
  • Christopher C. Adams as Cody: a descendant of April and Casey, who lives in 2105 and helps the turtles survive in the future.


Following their intentions to return the characters to the present day and adapt a tone similar to the recent TMNT movie, 4Kids pitched a revamp of the series to Peter Laird codenamed "Superworld." The initial proposal was given the 'thumbs down' by Laird.[1] Following this was a second proposal called TMNT Overload, which was approved by Mirage, but rejected by Playmates Toys, who then proposed their own idea, only to have that be rejected by 4Kids and Mirage.[2]

On October 24, 2007, Steve Murphy confirmed on his blog that Playmates, Mirage, and 4Kids had firmly agreed on the new direction, which will take place in the continuity of the 2003 series and use the "more realistic aspects" of the aborted "Overload" pitch, with character designs similar to that of the 2007 TMNT movie.[3][4]

Its description was as follows:

The Teenage Mutant Ninja Turtles are back in New York, ready to race across the rooftops and take on all challengers!

Not only are Casey and April back and ready to bust some bad guy butt, but a brand new, super advanced Turtle Lair is under construction (thanks to some hi-tech know-how Donatello garnered from the future), and of course there are all sorts of new heavy duty Turtle vehicles gearing up to roar down the streets of NYC and give the Foot a taste of some serious Turtle.

The stakes have never been higher, their enemies have never been stronger... and if the Turtles are going to be triumphant they’ll need to work together in ways they never have before.[5]

Further info was revealed in December 2007:

When the Turtles return from the future to their present time, Viral interferes causing Master Splinter to get trapped in cyberspace, bits of his data code scattered all throughout the digital domain. The Turtles must find a way to access the virtual realm so they can gather Splinter’s code and save their beloved father before he is lost to them forever. And what good is a digital realm without a super bad guy! That's right; the Shredder is back in new form. In order to save their master, the Turtles must now face. The Cyber Shredder! Now the Turtles must fight on two fronts - cyberspace and the real world. And twice the locations, means twice the bad guys. That's right; the TMNT will be facing off against Hun, the Foot, Baxter Stockman, and some dangerous digital monsters! Get ready, because the Turtles are back from the future, back in action, and back to the sewers![6]

Three samples of a new opening theme song were announced by 4Kids to be under consideration on February 22, 2008, with the option for fans to vote on each of the samples and determine an official opening theme song.[7] Six pitches for the theme song were released on February 29, 2008 most confirming that the Shredder will return in some form. Much of the theme lyrics identify him as "Cyber-Shredder."[8] A trailer was released on August 8, 2008.

On September 6, 2008, a sneak peek of the season's opening episode was featured on 4Kids official website. The footage revealed that the Turtles return from the future after Michelangelo coaxes Viral into assisting them.[citation needed] However, the Turtles discover they have been sent back a year or so later from when they had left, and also bear witness to a near-future where a war has broken out between the Utrom Shredder (Ch'rell), the original Tengu Shredder (Oroku Saki) and the yet-unencountered Cyber-Shredder.[citation needed] Viral, desperate for energy after being depleted in battle, taps into the present day's network systems, but is overtaken by a Foot Ninja computer code, transforming her body and mind into the Cyber-Shredder.[citation needed]

It is later revealed that the Cyber-Shredder is actually a digital backup of Ch'rell's memories from his attempted departure from Earth, and later banishment to the frigid asteroid in the third season's two-part finale, Exodus.


No. in
No. in
Title Directed by Written By Original air date TV
1431"Tempus Fugit"Roy BurdineEric BasartSeptember 13, 2008 (2008-09-13)S07E01
When the Time Window is finally repaired, the Turtles enter into it to head home. Instead of returning to the lair, they find themselves with Viral, who had escaped from inside Serling. Viral takes control of the time portal, sending the turtles to different points in history, hoping they will be eliminated. However, Mikey tricks her into taking them to the "not-too-distant" future where 3 Shredders (including a red one) are fighting for control with rivaling Foot Clans. The turtles meet an enemy who claims to have killed them, but manage to have Serling open a new portal in time to send them home by using the decompilier on Viral once again. However, Viral manages to muster enough control over Serling to make him fire the decompilier at Splinter, scattering him into data-bits while in the time stream. Upon returning to the present, Donnie blames himself for the loss of Splinter. Elsewhere, Viral attempts to recharge her energy by hacking into a heavily guarded Foot data vault. However, it backfires as a program infects her and transforms the digital being into the Cyber-Shredder, the one of the 3 Shredders from the future.
1442"Karate Schooled"Roy BurdineMichael RyanSeptember 20, 2008 (2008-09-20)S07E02
The Turtles are reunited with Casey Jones and April O'Neil, who inform them that they have been missing for an entire year. Everyone tries adjusting back to the lower tech era, while Donatello begins construction on a device to enter cyberspace to retrieve the data-bits of Master Splinter. Casey has been attending a martial arts school, heading by Khan, a devoted Foot Clan operative who is recruiting and brainwashing his students to rebuild the Foot. Despite the Turtles interference, Khan's hopes are renewed when Cyber-Shredder makes contact with him from cyberspace.
1453"Something Wicked"Roy BurdineMichael RyanSeptember 27, 2008 (2008-09-27)S07E03

The Turtles journey into cyberspace to save as much of Master Splinter as they can find, using the new Cybernaut armor and weapons designed by Donnie. However, there is a major obstacle in their way: The Cyber-Shredder. And he has no intention of letting his most hated foes return home to the real world.

  • Karai appears in a flashback alongside her adopted father, the Utrom Shredder.
1464"The Engagement Ring"Roy BurdineRobert DavidOctober 4, 2008 (2008-10-04)S07E04
Casey and Raphael head to Chinatown to find an engagement ring for April. However, as Hun is after a magical ring that can summon monsters, as precaution against the Cyber-Shredder, the store-owner gives it to Casey. The ring causes the evil in April to grow, until she turns into a monster; Hun is beaten badly, leaving him to give up on the ring. Managing to get the ring off April, Casey succeeds in saving her. The store-owner gives her the real engagement ring, and she and Casey are engaged.
1475"Hacking Stockman"Roy BurdineJoe KellyOctober 18, 2008 (2008-10-18)S07E05
While Donatello focuses on collecting Splinter’s data bits, his brothers find themselves pulled into a war between The Foot and the Purple Dragons. Baxter Stockman has been hacking into the Foot's funding for the Purple Dragons. Cyber-Shredder possesses Baxter's robotic body. Stockman abandons the body, having learned never to get too comfy in one. Stockman's body proves formidable under the Cyber-Shredder's control, taking all the attacks they throw at it. Stockman contacts Donatello, informing him of the situation; Don gives up on retrieving Splinter's data-bits and distracts the Cyber-Shredder, allowing Baxter to upload a firewall to keep the Shredder trapped in cyberspace.
1486"Incredible Shrinking Serling"Roy BurdineRobert DavidOctober 25, 2008 (2008-10-25)S07E06
Sick of being in a primitive era, Serling arranges for each of the turtles to spend the evening doing something they like, to prevent interference with construction on a Time Window. However, it backfires, shrinking him to the size of a toy and sending him at least 50 years into the past, where he destroys a boy's toy soldier. It then sends him to when the Turtles were toddlers; they fight over him before being reprimanded by Splinter. Serling is then kidnapped by the boy he encountered earlier, now a rich toy mogul who is intent on possessing such an amazing "toy". However, Serling's attitude causes the Turtles and the mogul to hate him, and he ends up back in the present, back to normal. The Turtles take Serling out on one of their nightly rooftop runs, cheering him up.
1497"Identity Crisis"Roy BurdineMichael RyanNovember 1, 2008 (2008-11-01)S07E07
Cyber-Shredder unleashes a virus that wipes the Turtles' memories, reprogramming them so that they work for the Foot. The four Turtles do the bidding of Master Khan while April, Casey, and Serling attempt to restore the memories of the four heroes. Do they succeed?
1508"Web Wranglers"Roy BurdineRobert DavidNovember 8, 2008 (2008-11-08)S07E08
The Cyber-Shredder creates a prototype web portal to escape cyberspace. He sends animals through which mutate and attack New York City, leaving the Turtles to clean up the mess and stop the Cyber-Shredder from becoming real once again. When it seems that the Cyber-Shredder has perfected the portal, Donatello hacks it, causing the Shredder to grow and distort the moment he materializes in the real world. In the end, Cyber-Shredder is banished back to the cyberspace.
1519"SuperQuest"Roy BurdineRobert DavidNovember 15, 2008 (2008-11-15)S07E09
The Turtles enter Superquest, Mikey's favorite online game, retrieve Splinter's data bits when Don finds that more of them are in the game. However, they are being limited to Superquest's rules and character abilities. The Turtles must learn to use their character's powers to unlock the chest that holds the cluster of the data bits. Assisting them is the Elfinator, a character controlled by Hun, who doesn't know he's helping the turtles (as they appear human on the screens viewed by the players). The Ultimate Gamer character breaks the rules by posing as a NPC, but the person in charge of the rules fell asleep at the screen. The U.G. is defeated in a group effort and the turtles take Splinter's data-bits. Ironically, Mikey and Hun both say they wish to be friends in real life.
15210"Virtual Reality Check"Roy BurdineMichael RyanNovember 22, 2008 (2008-11-22)S07E10
The turtles retreat from the Cyber-Shredder back into the real world, exploding the portal in the process, leaving Donatello to try repairing it. Leonardo, Raphael, and Michelangelo experience a strange series of events that suggests that they are still in cyberspace; when they try warning Donnie, the Cyber-Shredder releases a virus to topple buildings and form mountains to block them. The Turtles eventually get to Don and tell him they're still in cyberspace. Don opens a portal for the Turtles to escape from cyberspace. However, the Cyber-Shredder managed to copy Don's plans thanks to a bug, allowing him to construct a perfected portal and enter the real world, where Khan and his faction of the Foot await.
15311"City Under Siege"Roy BurdineSteve MelchingNovember 29, 2008 (2008-11-29)S07E11
The Cyber-Shredder hacks into the power-grid of New York, taking control of every electronic device in the city; effectively, conquering it. Meanwhile, the Turtles find that Hun and the Purple Dragons have been attacked. Once they realize that the Foot are behind the electrical problems, The Turtles battle through New York to restore the power grid. They fight the Cyber-Shredder and succeed in electrocuting him to death, causing the Foot to flee. However, once alone, the Shredder's body juts out a spike, impaling a wire and releasing an electric current into it.
15412"Super Power Struggle"Roy BurdineRobert DavidFebruary 21, 2009 (2009-02-21)S07E12

Mikey resumes his role as Turtle Titan, finding a green cape after a battle. Forcing Raph to don it as a sidekick, Mikey is surprised that it grants him super powers, the cape belonged to the Green Mantle, the Justice Force are impressed enough to invite Raph to join. Dr. Malignus tries to get the cape for his own villainous designs. Mikey becomes jealous of Raph, resulting in them tearing the cape in two in a tug-a-war for it; each wears a half, but finds that their unique abiliites have been divided between them. In the end, they give the cape back to the original Green Mantle.

  • This is the only episode where Leonardo does not appear, but this is also the second episode where Donnie does not appear.
15513"Wedding Bells and Bytes"Roy BurdineMatthew Drek & Robert DavidFebruary 28, 2009 (2009-02-28)S07E13
The Turtles manage to collect all of Master Splinter's data-bits and reconstruct him in reality. Unknown to them, the Cyber-Shedder placed a bug in the data-bits, causing a tracer to appear in Splinter's ear, allowing him to track the turtles to April's farm. There, both April and Casey are happy Master Splinter has returned, making their wedding day tomorrow an even better day, until the Shredder and the Foot decide to crash the party. After accidentally giving away that Viral's digital core still exists in him, the Cyber-Shredder is (hopefully) finally killed by the compiler, forcing Kahn and the Foot to flee. The wedding resumes with guests from different dimensions, worlds, and times. The Rat King, the Damiyo and Ultimate Ninja, Agent Bishop, Cody Jones, and Renet all watch from a distance or via technological or magical means.
15614"Mayhem from Mutant Island"Roy BurdineMatthew Drek & John DrekMarch 27, 2010 (2010-03-27)S07E14

During a night of showing off their extreme sports gear, the Turtles are attacked by a monster from beneath the Earth. They trace it to a remote island where they uncover their old foe, Baxter Stockman, who has created vicious monstrosities to unleash on the unsuspecting public.

  • Originally aired as a series of shorts before being compiled into this episode.

"Mayhem from Mutant Island" shorts[edit]

Starting March 7, 2009, a series of 13 shorts, called "chapters", ranging from 90 seconds to two minutes in length, began airing on The CW4Kids during episodes of TMNT: Back to the Sewer and Chaotic: M'arrillian Invasion. They were streamed on the 4Kids website a week in advance of airing them on television. The episodes comprise a single story called "Mayhem from Mutant Island."[9] On March 27, 2010, the 13 shorts were re-aired compiled as the single episode "Mayhem from Mutant Island".

No. Title Original air date TV
1"What Lurks Beneath"March 7, 2009 (2009-03-07)S07E14
While riding around with their sports gear, the Turtles are attacked by a giant crustacean-type monster that emerges from the sewers.
2"Terror Unleashed"March 7, 2009 (2009-03-07)S07E14
The Turtles overcome the monster, only to fall into the sewer. Upon landing, a large group of mutants attacks.
3"Trouble Runs Rampant"March 14, 2009 (2009-03-14)S07E14
After narrowly escaping the mutants in the sewer, the Turtles don their Sub-Sewer Gear in order to combat them.
4"Showdown in the Subterrane"March 21, 2009 (2009-03-21)S07E14
The Turtles defeat the dinosaur mutants, only to subsequently discover they were right in front of a Purple Dragons stronghold.
5"Attack of the Purple Dragons"March 28, 2009 (2009-03-28)S07E14
The Turtles face off with Hun and the Purple Dragons, believing them to be responsible for the mutant dinosaurs. It is revealed, however, that Baxter Stockman is the true culprit.
6"Face-Off with the Foot"April 4, 2009 (2009-04-04)S07E14
After Hun tells the Turtles that Khan and the Foot Clan are behind the mutant attacks, the Turtles don new metal armor and forge new and even stronger weapons before storming their hideout.
7"Rivals Take Arms"April 11, 2009 (2009-04-11)S07E14
Using their new-and-improved armor and weapons, the Turtles battle with Khan and the Foot Clan.
8"Dread Returns"April 18, 2009 (2009-04-18)S07E14
The Foot Clan backs off as a mutant T-rex enters the scene, grabbing Leo into its jaws.
9"In Pursuit of Danger"April 25, 2009 (2009-04-25)S07E14
The Turtles chase after the mutant T-rex in the Hauler, but once Leo is freed, the Turtles find themselves facing an entire group of mutant dinosaurs.
10"The Scourge Revealed"May 2, 2009 (2009-05-02)S07E14
Using the Hauler, the Turtles take out as many of the mutant dinosaurs as they can, which causes the underground railway tunnel they are fighting in to collapse. Immediately after, they receive a message from Stockman.
11"Rendezvous with Evil"May 9, 2009 (2009-05-09)S07E14
The Turtles locate Stockman in their helicopter, but are struck out of the air by the mutant dinosaurs. The Turtles respond by donning their Mech Wrecker suits and engaging the mutant dinosaurs in battle.
12"Stockman Strikes"May 16, 2009 (2009-05-16)S07E14
As the Turtles battle with Stockman and the mutant dinosaurs, Don discovers that the dinosaurs are being controlled by a radio tower.
13"Fate of the Deranged Dinos"May 23, 2009 (2009-05-23)S07E14
Don destroys the radio tower with his mech-suit, and the dinosaurs become docile. With that, the Turtles leave the island.


  1. ^ "TMNT 2008 cartoon season: now what?". the-5th-turtle.blogspot.com. Archived from the original on 2007-11-09. Retrieved 2008-02-19.
  2. ^ "TMNT: Overload...not?". the-5th-turtle.blogspot.com. Archived from the original on 2007-10-18. Retrieved 2008-03-05.
  3. ^ "2K8 sneak peek.1". the-5th-turtle.blogspot.com. Retrieved 2008-02-19.[dead link]
  4. ^ "2K8 sneak peek.2". the-5th-turtle.blogspot.com. Archived from the original on 2007-11-13. Retrieved 2008-02-19.
  5. ^ "2008 TMNT series update". the-5th-turtle.blogspot.com. Archived from the original on 2007-10-27. Retrieved 2008-02-19.
  6. ^ "Back to the sewer!". the-5th-turtle.blogspot.com. Archived from the original on September 14, 2008. Retrieved 2008-09-15.
  7. ^ "You Decide the "TMNT" Theme Song". 4kids.tv.com. February 22, 2008. Archived from the original on January 11, 2010. Retrieved September 10, 2016.
  8. ^ "TMNT Pick a theme song". 4kids.tv. Archived from the original on 2018-01-10. Retrieved 2008-02-19.
  9. ^ http://www.4kidstv.com/tmnt-back-to-the-sewer

External links[edit]