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 (a half-Tetramand) and Helen (a half-Kineceleran) mistake Ben, Gwen, and Kevin for dangerous aliens. Ben 10: Alien Force Season 01 (Dub) Episode 12
: 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. The 12th episode of Ben 10: Alien Force Season 1 is titled
: 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
: To make amends, Helen and Manny decide to enter the Null Void themselves to find and rescue the people they wrongfully imprisoned. Key Characters & Transformations
: Manny and Helen share the same abilities as Ben's classic aliens, Four Arms and XLR8 , respectively.
: After a brief skirmish, the duo manages to kidnap Kevin Levin for questioning, unsure of his species or intentions.