Pierce Wheels

Pierce Wheels was a Plumber's kid that first appeared in Ben 10: Alien Force.

He worked with a Tetramand hybrid named Manny and a Kineceleran hybrid who is also his adopted little sister, Helen, in Plumbers' Helpers, trapping what they thought were dangerous aliens set out to conquer the Earth.

Unlike Manny and Helen, after sending someone with a Plumber's Badge to the Null Void, he began to have doubts about what they were doing. However, before he could voice his concerns, he was believed to be killed when an attempt to destroy a DNAlien with the "Eradicannon" went wrong, this was later revealed to be false when the weapon they were using is shown is actually a Mark 1 Null Void Projector.

Pierce was the counterpart of Ben on his team, as Helen is to Gwen and Manny is to Kevin.