Jimmy first appears in Fame when Ben finds out that Jimmy has been posting things and a video about him and his aliens on a website. He and the team realize that Jimmy is pretty useful so they let him do what he wants.
Jimmy wears a hoodie similar in design to Ben's jacket and wears the same kind of cargo pants that Ben did when he was ten years old.
- Jimmy thought Jetray was called "Jeffrey", until Ben corrected him.
- Jimmy has a liking for peanuts since Eye of the Beholder.