Rat King (Teenage Mutant Ninja Turtles) his mind as in later episodes. Even Splinter was affected by the music and almost killed the TMNT in a fight. The cartoon version of the Rat King was also depicted as highly intelligent, shown to be able to create such things as various chemical concoctions and bombs. In the series, the Rat King is shown as a homeless man living in a dilapidated portion of the New York City sewer system near the Turtles and Splinter. In episodes featuring him, the Rat King would often enact some sort of plot to establish his own rat-controlled government and bring human
Rat King (Teenage Mutant Ninja Turtles) to fight off any alien threats and was given a test run against the Turtles, who broke into Bishop's laboratory looking for the kidnapped Splinter. The Slayer was presumed destroyed when a fight between him, the Turtles, Splinter and Bishop flooded the agent's lab. In actuality, the Slayer survived and was sent hurdling through the sewers, eventually being deposited near the industrial park the events of "I, Monster" take place in. Losing several of his robotic parts, cloaking device and healing ability, the Slayer degenerated into an even more monstrous form, becoming the Rat King. The Rat King makes a