Phil Billings

Phil is a corrupted Plumber, who was Max Tennyson's partner and helped in defeating Vilgax for the first time. He is also the original user of the Nemetrix.

Early Life
Phil was originally a Plumber who served as Max Tennyson's partner during their first fight with Vilgax. He helped him defeat the galactic warlord by serving as a distraction for Max to glue Vilgax to a nuclear missile.

Ben 10
Decades later, he began releasing aliens from the Null Void to be paid to have them removed in order to get a quick buck. The Tennysons stumbled upon his scam and accidentally sent him to the Null Void in the resulting struggle between him and the Tennysons.

Ben 10: Omniverse
Phil spent the time between his first and second appearances fighting and warding off the Null Void creatures when he was captured by Dr. Psychobos, Malware and Khyber where they forcefully used him as a guinea pig for the Nemetrix in a test run against Ben using Terroranchula. However, the test failed miserably because sapient creatures like Humans can't handle the savage mind set of the predators.

Ben 10

 * Truth
 * The Visitor (cameo in flashback)

Ben 10: Omniverse

 * Of Predators and Prey: Part 2 (in flashback)

Trivia

 * Phil is voiced by Robert Patrick who is best known as the T-1000 in Terminator 2: Judgement Day.
 * In the Pop Up Edition of Back With a Vengeance, it was mentioned that Phil was far away from where Ben was fighting Vilgax and Kevin Levin.