Ice Cream Kitty is, as her name implies, a fragile Mutant cat/ice cream hybrid. She appeared in the second season of the 2012 TV series. Until the events of The Invasion, Part 2, she lived in the Turtles' freezer as Michelangelo's pet.
She's composed of three prominent flavors: a tiny dab of chocolate, vanilla (which makes up her whole torso) and strawberry that makes up her upper body, but before she got mutated, she was a wounded brown-striped street cat that had appearances in both the foreground and background in several prior episodes. She currently lives in the Turtles' freezer and Mikey uses a portable cooler to carry her around when venturing outside if necessary.