Masks — Hayden Thorne

While his friends continue to develop their newfound powers, Eric begins to feel the effects of being the odd man out. Around him, things go from bad to worse for Vintage City as the Shadow Puppet, a new supervillain, steps into the Devil's Trill's shoes and wreaks havoc with his army of killer mannequins.

Magnifiman, Calais, and Spirit Wire have their hands full, with the Puppet proving to be much more slippery than the Trill and leaving the good guys scrambling for clues. Work-related stress creeps into Eric's relationship with Peter, which reaches the breaking point when Peter takes a new superhero under his wing: a fire-wielding teenage girl, whose awesome powers could make her a better match for Peter.

To make matters worse, there are the strange headaches, sleepwalking, and nightmares that haunt Eric, as well as the Devil's Trill's call for him to take his place as a supervillain sidekick. There's also Brenda Whitaker, her mysterious past, and her sudden desire to help Eric as he struggles to figure himself out and make the right choice before his parents ask him again about his awful Geometry and Chemistry grades.