Ben 10 Planet

Pierce Wheels

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Pierce Wheels
Pierce day
General Information
Species Human (formerly)
½ Human ½ Unknown
Home World Earth
Residence Bellwood
Null Void (formerly)
Age 15 (Alien Force)
16 (Ultimate Alien; deceased)
Affiliations Ben's Team
Max Tennyson
Occupation(s) Plumber
Powers and Abilities
Abilities Thorn Generation
Thorn Projectiles
Sleep Inducing Quills
Equipment ID Mask (formerly)
Relatives Helen Wheels (adoptive sister)
Unnamed parents
Alias Walking pin cushion (Ben)
Voice Actor Adam Wylie
First Appearance Plumbers' Helpers

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.


After Ben 10

Pierce was actually born as a human who got sent into the Null Void under unknown circumnstances. A man named Proctor Servantis used Kevin's powers and Argit to create Pierce's actual form. He, along with Helen, Manny and Alan formed a group, named Amalgam Kids and they were used by Proctor to do bad things. At some point their memories were completely wiped by Proctor.

Alien Force

Pierce was stuck in the Null Void and began working with Max Tennyson to protect its inhabitants from D'Void, gathering other Plumbers who were trapped/living there. He also appeared in War of the Worlds helping against the alien threat/onslaught by the Highbreed and when the battle was over, continued in his task and became a pupil of Grandpa Max. He is also like the mirror of Ben Tennyson and often share the same views.

In Above and Beyond, Pierce acts as the leader of the Plumbers' Helpers on a mission to save Magister Max Tennyson from a rampaging Ben aboard a Plumbers' Space station in low orbit. Pierce is attacked by Goop. He is very respectful of Grandpa Max, usually referring to him by his Null Void alias of "The Wrench" or by his Plumber rank of "Magister". He is shown to be a capable leader who believes in working as a team. He often clashes with Manny over his leader position, mainly due to Manny's brash personality. He and his team manage to overcome their differences and work together to defeat Ben as Humungousaur. When they discover the space station they are on is going to crash into London, Pierce and the others realize the only way to stop it is to destroy the station before it enters the atmosphere. With their shuttle gone, Pierce and the others show they are willing to sacrifice themselves for the greater good. However Max appears along with Ben and reveals the space station is a Plumbers' Training facility and that Ben's rampage was actually a test for them. They are then told that because of their defeating Ben (as well as their heroic actions in trying to prevent the space station from hitting a major city) they are approved for training at the Plumbers' Academy and are sent to follow in the footsteps of their Plumber parents.

Ben 10: Ultimate Alien

Pierce human form

Pierce, wearing an ID Mask, moments before his death

According to Alan in Absolute Power: Part 1, Pierce had his powers absorbed by Ultimate Kevin. But, in Absolute Power: Part 2, he was revived and regained his powers when Kevin returned to normal.

In The Purge, Pierce was shown wearing an ID Mask when on a date with a girl which is crushed by The Forever Knights who want him to leave Earth. He was later killed by them when he explained that he was unwilling and unable to leave.


Pierce is level-headed, stern, tactical, and a natural born leader who holds the team together. Helen mentioned that it was always Pierce who kept them grounded, and Pierce who always made sure they were careful.

As noticed by Helen, Pierce is the mirror image of Ben. Both of them taking up the role of leader on their respective teams and both of them being the calculative tactician who formulates the teams plans. On the first encounter between Ben's Team and the Plumbers' Helpers where both teams end up quarreling with their counterparts, Ben, who is the only one without a mirror counterpart, breaks up the dispute by saying "Hey!! Stop it, all of you! What am I, your babysitter or something?!" which is exactly what Pierce had said, which causes Helen to notice Ben and her brother's similarities.

Powers and Abilities

Pierce has the ability to grow thorns on his body. He can grow and retract them at will, as well as being able to shoot them as projectiles or break them off in order to use them as weapons.

Pierce is also highly skilled in acrobatics and hand-to-hand combat, regularly using them in combination with his powers.


Ben 10: Alien Force

Ben 10: Ultimate Alien

Ben 10: Omniverse


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