Evil Clone Abby is... Well, an evil clone of Abby. She was created as a clone, in a part of an army of rats created by Lance Boil and Roger Pink-Eye to make Pink-eye's dream come true, to become a Grossologist. Lance Boil had other ideas in mind though- to take over the Bureau of Grossology! The Evil Clone was working an inside job at the Bureau of Grossology and also fired Ty and Lab Rat by putting them off the team. She has human and rat DNA. The clone even fought Abby and defeated her. Suddenly, the evil Clone Abby transforms into a Giant Rat. Ty, Abby, Lab Rat, and The Director are going to need a bigger cage to put Lance Boil's giant rat away.