Rat King (Teenage Mutant Ninja Turtles) cameo appearance in "Teenage Mutant Ninjas Turtles" Vol. 4, watching as Splinter succumbs to a heart attack and dies while retrieving milk from a refrigerator. Much of the Rat King's origin is later revealed in an issue of "Tales of the Teenage Mutant Ninja Turtles" Vol. 2; the story reveals that a group of beings known as the Pantheon exists, with each member of the group having jurisdiction over a species of animal. When the time of the Pantheon member who rules the rats reaches an end, a new one is chosen, a scarred and heavily bandaged (explaining the Rat
Splinter (Teenage Mutant Ninja Turtles) to stop Shredder from killing him. Splinter defeats Shredder, somewhat paralyzing him as Tiger Claw takes him away. When Shredder has himself infused with mutagen, he kidnaps Karai and demands her to come. Splinter fights Shredder along with the turtles, and the fight, leading up to rocky crevices and chasms below, Splinter and Shredder fall into a gaping chasm. Shredder's fall stops short as he lands on a rock outcrop as Splinter falls way way down. He is still alive but his leg is broken. He sees the Rat King come toward him, seemingly surviving his fall down as well.