Her real name is Amy Hall. She is a bio-geneticist and an avid collector of Cuddle Buddies (small stuffed toys similar to Beanie Babies, except for being hybrid crosses between two separate animals; her favorite being an Otterfly, a butterfly and an otter). In her obsession, she created mutant animal hybrids ("life-size, living Cuddle Buddies!"). She, at one point, had crushes on Mr. Barkin and Drakken, but now has a crush on Monkey Fist, on whom she performed his trademark genetic mutation. She has a bubbly, clingy personality, a rarity for any villain, whether on the series or otherwise.
In Season 3, she replaced her human body with that of a gorilla, in a stalker-like attempt to Get Monkey fist to reciprocate her romantic feelings. instead, he went into hiding. However in Season 4, Amy was back to her own body as seen in Grande Size Me, when visiting an MHS football game (seen in the bleachers) during Homecoming Upset, and end credits of Graduation.