Isabella is a teenage werewolf who is Justin's love interest and date in Season two's "Beware Wolf". She is part of a series of Justin's love interests that are monsters. Justin first comes into contact with Isabella when his friends from WizTech set him up on a blind date with her. At this point, he knows very little about her except what is on her WizFace (a wizard social network site) online profile. She kisses Justin and turns him into a werewolf. It can be concluded that she is a "mutt" werewolf. According to Mason, only mutts change humans into werewolves with a kiss.