|James "Jimmy" Jones|
|Species|| Esoterica (temporarily)|
|Affiliations|| Ben Tennyson|
|Powers and Abilities|
|Abilities||Alien Tech expert|
|Relatives||Mrs. Jones (mother)|
|Alias|| The Mastermind (Kevin)|
Dumb kid (Kevin)
|Alternate Counterparts||Jimmy Jones (Cosmic Destruction Timeline)|
|Voice Actor||Scott Menville|
James "Jimmy" Jones is a kid who is a major fan of Ben and his alien heroes. He runs a website with pictures of aliens around the world including, every alien Ben has ever turned into, even dating back to when Ben was ten years old. He always refers to Ben as Mr. Tennyson.
Jimmy is a fair complexioned kid. He wears a hoodie similar in design to Ben's jacket.
In Ultimate Alien, Jimmy had light-brown hair and black eyes.
Ultimate AlienJimmy first appears in Fame when Ben finds out that Jimmy has been posting things and a sent out video about him and his aliens on a website that finally showed the world that Ben has the ability to turn into aliens, as he thought Ben would like the fame and money but had Ben ended up in being both liked and hated by the public.
The team realize that Jimmy is pretty useful so they let him do what he wants.
In Eye of the Beholder, Jimmy gave Ben "relationship-advice".
In The Big Story, Jimmy was trying to get some footage of an alien ship but instead finds a plant alien trying to take over Earth. Jimmy was able defeat the plant and plant copies of Ben, Gwen and Kevin using peanuts which proved to be the plants only weakness.
In Return to Forever, Jimmy helps Ben and Rook defeat the Forever Knights.
Ben 10: Ultimate Alien
- Fame (first appearance)
- Andreas’ Fault
- Eye of the Beholder
- The Big Story (protagonist)
- The Ultimate Enemy: Part 1 (cameo)
Ben 10: Omniverse
- Return to Forever (first re-appearance)
- According to Ben, Jimmy provides reliable information.
- For a strange reason, when he is transformed into an Esoterica he gains height until he's the same size.
- Jimmy thought Jetray was called "Jeffrey", until Ben corrected him.
- Jimmy is homage to Jimmy Olsen and Rick Jones, to Superman and the Incredible Hulk being sidekicks and fans to them respectively.
- Jimmy plays Craft of War (a wordplay on World of Warcraft) with a Forever Knight NCO that uses the user name, "foreverduke838".
- Jimmy seemingly has an addiction with peanuts since Eye of the Beholder.
- Ben and Jimmy both share a keen interest in Sumo Slammers.
- Jimmy has also proven to be an Alien Tech expert capable of operating complex terrestrial mechanism quite skilfully.