Max Tennyson is Ben's Grandfather in the Ben 10 saga

Maxwell Tennyson
200px-Max ominverse render-1-
General Information
Species Human
Age 10 (Majority of Don't Drink The Water)
17 (Moonstruck flashback)
59-60 (Ben 10)
64-65 (Alien Force)
65-66 (Ultimate Alien and Omniverse)
Affiliations Plumbers

Ben's Team DNA Force (Unofficial Member/Ally)
The Air Force (formerly)
NASA (formerly)

Occupation(s) Plumber
Magister of Earth (current Plumber rank)
Air Force Lieutenant (formerly)
Powers and abilities
Abilities Quite knowledgeable about aliens of various species & alien tech
Plumber Training
Military Training
Equipment Plumber Suit and Weapons

The Wrench
Magister Max Tennyson
Old Man (Ultimate Kevin)
Grandpa Max (Gwen)
Grandpa (Ben)
Tennyson (Vilgax)
Sweet Man (Verdona)
Legendary Plumber

Voice Actor

Paul Eiding (Every Series) Adam Wylie(10 Years old in Don't Drink The Water) Jason Marsden (17 Years old in Moonstruck) Lee Majors(Ben 10: Race Against Time Barry Corbin (Alien Swarm)

First Appearance And Then There Were Ten


His appearance has not changed that much except for his brown pants have changed to white. He has whiter hair and more wrinkles. His white shirt that he wore under his red button up shirt has changed to black. Also, his shoes are now grey at the top and black at the bottom.He wears his hawil shirt and cankys still.

Powers and Abilities

Although Max doesn't have any super powers, he is very skilled in combat and can take on anyone who does have them as he is quite athletic for someone of his age. As a retired plumber, he has access to a variety of various plumber tools and weaponry which he uses skillfully. Aside from that, his experience from his plumber days made him knowledgeable on various species of aliens.


Ben 10: Omniverse


  • He will appear more in Omniverse than Ultimate Alien.
  • Derrick confirmed that Max in Omniverse is a reference to the comic book character,Shazam.[2]
  • Confirmed in Malefactor, Max was a Magister for at least 5 - 6 years.