Amy Madison

Amy Madison is a fictional character on the American television series Buffy the Vampire Slayer, portrayed by Elizabeth Anne Allen; the character is a witch, and is portrayed by unnamed rats for parts of three seasons, having transformed herself but inadvertently losing the human intelligence needed to cast a spell to revert herself. The character – human and rat – appears in every season of Buffy except the fifth.

Although initially a seemingly good-natured individual, Amy gradually begins misusing her magic, eventually becoming an enemy to Willow (Alyson Hannigan) and her friends. In the series' comic book continuation, the character is a villain.