The 12th episode of Ben 10: Alien Force Season 1 is titled . In this episode, Ben and his team encounter two rogue Plumber offspring, Manny Armstrong and Helen Wheels , who have been hunting aliens and trapping them in what they believe is a "disintegrator ray"—which is actually a Null Void Projector . Episode Summary
: Manny and Helen share the same abilities as Ben's classic aliens, Four Arms and XLR8 , respectively.
: Ben and Gwen Tennyson track them down to rescue Kevin. During the fight, Ben is temporarily thrown into the Null Void as Swampfire but manages to escape.
: Ben eventually convinces the pair that they are allies. He realizes that many of the "aliens" they previously captured were actually other innocent Plumber kids.
Watch these recaps and reactions to see Manny and Helen in action against Ben's team:
Drainage West Yorkshire