The series is about an orphan boy named Eric, with his best friend Trevor and his two female friends, Vana and Kitty, who are training to become sidekicks at the Academy for Aspiring Sidekicks in the city of Splittsboro. While dealing with intense sidekick training, Eric must also contend with his strict guardian Maxum Brain, his grumpy teacher Professor Pamplemoose, the evil Master Xox and keeping secret the disappearance of his superhero mentor Maxum Man from the city.
- Miklos Perlus as Eric Needles
- Christian Potenza as Trevor Troublemeyer
- Denise Oliver as Kitty Ko
- Stephanie Anne Mills as Vana Glama
- Ron Pardo as Maxum Man
- Tony Daniels as Maxum Brain