They are similar to BIONICLE figures but with simplified constructions and more specific parts. Each set is an action figure version of one of Ben's alien forms, composed of between fourteen and twenty-two pieces.
The theme was small and short-lived, containing just six sets. The Omnitrix, the strange wristwatch-like device that allows him to transform into ten different types of super-powered alien, has recalibrated, giving him access to a new selection of breeds and abilities. Set five years after the events of the original Ben 10 series, Ben 10: Alien Force follows the 15-year-old Ben Tennyson as he trains a new team of teenage heroes to fight the genocidal Highbreed and locate his missing grandfather, Max.