Bud and Lou

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Bud and Lou are fictional characters, the pet hyenas of The Joker on the cartoon series Krypto the Superdog, in which the Joker himself never appeared. They are primarily the foes of Ace the Bat-Hound, the pet of Batman, and were first introduced in the episode "The Dark Hound Strikes!" They attempt to commit crimes for their master, requiring Ace and Krypto (and Streaky the Supercat, on occasion) to stop them. They're both voiced by Peter Kelamis. Their names are references to the comedy duo Abbott and Costello.


In Krypto the Superdog both hyenas have red fur with black spots and black rings around their eyes. This may be a reference to Harley Quinn, the Joker's girlfriend and accomplice and their mistress. Bud wears a purple collar, has a black right front paw, and speaks in a higher voice. Lou wears a green collar, has a black left front paw and right hind paw, and speaks in a more gravelly voice. (However, in Batman: the Animated Series they are identical and both wear red collars (purple in the episode "The Man who killed Batman"); in The Batman, they are identical, wear no collars, and are grayish in color.) Both hyenas have a distinctive odor. This was first mentioned by Ace in the episode "The Cat and the Bat". Later on, in the episode "Funny Business", Ace told Krypto he could smell their evil.

Like their master, Bud and Lou love to laugh maniacally and play jokes on their foes. Like the other animal characters on Krypto the Superdog, they also seem to be quite intelligent (a reference to the intelligence of actual hyenas). For instance, in "Bat Hound and the Robin", while stealing pillowcases for The Joker to carry loot in, they deduced that the pillowcases made of one material would be better because pillowcases made from the other fabric would shrink in the wash, meaning less loot could be put in them. Also, The Joker has given the hyenas items to use in combating Bat Hound. At one point in "The Dark Hound Strikes!", Bud pretended to give himself up. When Ace seized Bud's collar in his fangs, he received an electric shock. Bud then announced he had a joy-buzzer collar and laughed. In "Funny Business", the hyenas had a bubble shooter which shot special "giggle bubbles". These bubbles caused Ace to laugh uncontrollably, a mild version of The Joker's laughing venom.

In other media[edit]


The Joker's hyenas have also appeared in Batman: The Animated Series, The Batman and the comics, but remained unnamed or simply referred to as "Babies" by Harley Quinn. Joker mentioned their names as Bud and Lou however in The New Batman Adventures episode "Joker's Millions" (which aired before Krypto the Superdog).


  • Bud and Lou also appear in The New 52 continuity of the DC comics, where they are (like in the cartoons) featured as Harley Quinn's pets. In the "Death of the Family" storyline the Joker, in an attempt to drive Harley mad, gives them rabies and sics them on her, forcing Harley to kill them.[1]
  • The DCAU versions of Bud and Lou also make an appearance in the intercompany comic crossover Batman/Teenage Mutant Ninja Turtles Adventures, where they have been turned into huge humanoid mutants after the Joker has taken over the Foot Clan and its mutagen resources.[2]
  • Bud and Lou appear in Scooby Doo! Team Up #42. While Harley Quinn "teams-up" with Mystery Incorporated, the Joker arrives with the Hyenas, to steal back a package from Harley that she assumed to be her Christmas present. Oddly enough, Harley calls them by the names of Scooby and Scrappy, much to the real Scooby's bewilderment.

Video games[edit]


  1. ^ Suicide Squad Vol.4 #15 (2013)
  2. ^ Batman/Teenage Mutant Ninja Turtles Adventures #4: "To Laugh So Not to Cry". DC/IDW; February 15, 2017.