appearance Latest appearance General information Nicknames Family members Alignment Status Physical information Species Gender Eye color Hair color Additional information Portrayed by The Masked Mutant is a supervillain and the main antagonist in the twenty-fifth Goosebumps book, Attack of the Mutant.
appearance Latest appearance General information Nicknames Family members Alignment Status Physical information Species Gender Eye color Hair color Additional information Portrayed by The Masked Mutant is a supervillain and the main antagonist in the twenty-fifth Goosebumps book, Attack of the Mutant.