<P> Max Thunderman (portrayed by Jack Griffo) is also one of the main characters . He is the antagonist - turned - anti-hero, being the twin brother Phoebe and older brother to Billy, Nora, and Chloe . Despite being raised within a family of superheroes, Max originally aspired to become supervillain for the first three seasons . In the Season 3 finale, he finally had a change of heart and made a life - changing decision to abandon the dark side and become a fighter for justice, using his powers and high - tech gadgets for the greater good . The fourth and final season focuses on Max readjusting to his new daily life as a superhero instead of an evil - doer, as he tackles challenges working with Phoebe in Z - Force training, which jeopardizes his friendship with Dr. Colosso . His basement bedroom serves as his secret lair, filled with high - tech gadgets and posters of The Villain League (especially Dark Mayhem). As of the fourth and final season, his lair now has posters of the Z - Force, and other superhero posters . His lair is accessible through a slide leading to his bed underneath a tea table next to the couch in the living room and it is also where he keeps his best friend and mentor, Dr. Colosso, a supervillain Thunder Man turned into a rabbit . Max has the same superpowers as Phoebe: telekinesis, ice breath, and heat breath ., and like his twin sister, he is 14 at the beginning of the series . </P> <P> Nora Thunderman (Addison Riecke) is the second youngest of the Thunderman family and a mischievous little sister to Phoebe, Max, and Billy and older sister to Chloe . Her superpower is laser vision . She can easily recruit Billy into any scheme of hers, as she scares him a bit . </P> <P> Billy Thunderman (Diego Velazquez) is the third - born Thunderman child . He is an energetic little brother to Phoebe and Max and older brother to Nora and Chloe . His superpower is super-speed . In one episode, it was revealed that Barb gave birth to Billy in the air while her husband was transporting her to a hospital, implying that Billy likely hit his head after birth, which is probably why he is sometimes unintelligent . </P> <P> Hank Thunderman (Chris Tallman) is the husband to Barb and father to Phoebe, Max, Billy, Nora, and Chloe . His superhero alias is Thunder Man . His superpowers are super-strength and flight . Hank has now half - unwillingly retired as a superhero in order to give his kids a stable and normal home . He still uses his powers to fly to places around the world . </P>

What is billy's real name from the thundermans