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Phoebe and Max, along with the rest of their family, have superpowers that would allow them to take over the world. But while Phoebe wants to use her powers to help, Max would rather become a supervillain.
Phoebe and Max seem to be regular teenage twins, in a family of superheroes! Phoebe tries to use her powers for good, but Max embraces the dark side. (S1, ep 1)
After Max pranks Phoebe on Picture Day, a prank war gets out of hand. Hank and Barb try a new parenting style to get Billy and Nora to do their share of chores. (S1, ep 4)
Max plans to sabotage dinner when Phoebe invites her crush's family over to impress them, but when an unexpected guest arrives, the evening could become a disaster! (S1, ep 2)
After changing his grades and being moved into a higher class, Max faces Phoebe in the Math Bowl. Meanwhile, Hank, Nora, and Billy try to catch the newspaper thief. (S1, ep 3)
Max and Phoebe use their powers on Ditch Day, but when they remember the school has security cameras, they get Billy and Nora's help to keep their secret a secret! (S1, ep 7)
Max and Phoebe get jobs at a pizza place, each trying to impress the manager. But when Max over-promises on a huge order, it could be all over. (S1, ep 9)
Phoebe volunteers to take the class Venus Fly Trap home for the weekend, but when Max performs an experiment on it, the plant just keeps growing and growing! (S1, ep 6)
When Max wins the school election that Phoebe had been working hard for, Phoebe plots revenge. (S1, ep 13)
Phoebe and Max's rivalry gets carried away while helping Billy and Nora with their projects. Barb tries to catch Hank after he copies her notes in book club. (S1, ep 5)
Hank creates a neighbourhood watch group when crimes start happening. Max takes the blame to hide his secret, so the family must catch the real criminal. (S1, ep 12)
A comet makes the Thundermans' powers go wonky just as Phoebe's crush asks her to a dance. It'll be fine if Phoebe and Max stick together, but neither wants that! (S1, ep 10)
When the kids accidentally wreck Barb's anniversary gift, they have to enlist superhero sidekick Blobbin's help to fix it and stall their parents. (S1, ep 11)
Phoebe gets the ability to sense danger before it happens, and uses it to impress her classmates. Meanwhile, Max pretends that he has not got his new power yet. (S1, ep 14)
When Phoebe becomes too busy, Max helps her by creating a clone so she can be in two places at once. But the clone starts making trouble for the real Phoebe! (S1, ep 8)
Phoebe and Max want to be trusted to have a normal teenage birthday party, but when Mrs. Wong goes missing, they realize how good their family parties are. (S1, ep 15)
Phoebe hosts her first sleepover and is caught using telekinesis to make it fun. She must wear an anklet that prevents her from using her powers. (S1, ep 17)
When a mean girl sabotages Phoebe in choir and takes advantage of Max by making him do her homework for her, the twins work together to get even with her. (S1, ep 18)
Max and Phoebe take Billy to the hospital when he hurts his thumb. They must stop the doctors seeing Max's brain scan which could expose their powers! (S1, ep 19)
Up, Up, and Vacay: The family win a dream holiday, but have different ideas about where to go. When they can't agree, they enter as two different teams, boys vs girls. (S1, ep 16)
Hank becomes Max and Phoebe's new science teacher. When he accidentally eats special turkey sandwiches that make him fall asleep, the twins must help him out. (S1, ep 20)