Tally Cat is the main protagonist of Interactive Math Journey, instead of Reader Rabbit who is absent from the game. She is a young kitten who wears a blue collar and backpack and goes on a big math journey to Magic Math Mountain with her best friend, Mat and their guide, Pop, to find the Math Magician. In the end, Tally is revealed to be the Math Magician. She gets dressed in a black cape and top hat and recites a poem about math.