Jerry is a rodentoid alien. He has a big blonde mustache and beaver-like teeth. He has black eyes with white pupils. His fur is brownish with three red spots on his forehead and two on his neck. He wears a standard Plumber Suit.
In Malefactor, a flashback shows that young Jerry didn't have a mustache in his early career.
In Mud Is Thicker Than Water, Ben makes a joke about Jerry being a mole, when Max suspects there is a mole in Plumbers HQ. Jerry later makes a cameo where Ben greets him, and explains to Gwen he was from Inhuman Resources.
An alternate timeline version of him appeared in And Then There Was Ben.
Ben 10: Omniverse
- The More Things Change: Part 1 (first appearance; cameo)
- A Jolt from the Past (cameo)
- Have I Got a Deal for You (cameo)
- Malefactor (flashback; cameo)
- Ben Again (cameo)
- The Frogs of War: Part 1 (cameo)
- The Frogs of War: Part 2 (cameo)
- Mud Is Thicker Than Water
- Something Zombozo This Way Comes
- Bengeance Is Mine (cameo)
- And Then There Was Ben (alternate timeline; cameo)
- The Rooters of All Evil
- Clyde Five
- Vreedlemania (cameo)
- Stuck on You
- The Final Countdown
- Jerry is in the app Ben 10 Slammers.
- When Ben gets Jerry out of a Zombozo disguise in Something Zombozo This Way Comes, Max says "That may explain why I haven't gotten a paycheck in so long." This reveals that Jerry pays him.
- Jerry talks for the first time in The Rooters of All Evil.
- Despite being the same species as Molestache, he is never seen using his mustache as a weapon.