Ben and a mysterious girl from his past must prevent an alien threat from destroying the world.

Top Cast

Ryan KelleyBen Tennyson

Galadriel StinemanGwen Tennyson

Nathan KeyesKevin E. Levin

Alyssa DiazElena Validus

Herbert SiguenzaVictor Validus

Barry CorbinGrandpa Max Tennyson

Dee Bradley BakerBig Chill / Humongousaur (voice)

Alex WinterNanomech (voice)