Katie is the kind of young pretty cliché mammoth that follows its "leader". She is rather aggressive when upset, and quickly speaks without thinking. This is a young superficial-enough diva, who wants to have fun rather than anything else. She does not understand that Peaches prefers to stay with his odd possum family rather than with them, who are real mammoth and it puts a gap between them, while they are yet of the same species.

She is recognises for her blond hair and blue eyes, and the flower she wears on her ear.