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He's in Ben 10:The negative 10.he's also in the beginning of Ben 10 Secret of the Omnitrix
ben 10 can beat negative 10
It is in Ben 10 season 4 episode 8 Hope that helped (what I mean is when Ben and Gwen are little)
http://www.ben-10.net/media/ go to this exact site and download the episode.
The last episode hasn't aired yet.
Ben 10 Alien Force Episode 14: Darkstar Rising
no sorry but there is ben 10 alian force
And Then There Were 10...
Ben had a car in Ben 10 Alien Swarm (Season 3 Episode 10).. But in further episodes it was not shown. Ben has got a car from begining of Ultimate Alien Series.
I am trying to find that out 2, the only one i know of is Ben 10 Season 2 episode 7 Tough Luck
Ben 10 Aliens Force has not yet come to a series finale episode.
"The Ultimate Enemy Part 2" is the Final episode of Ben 10 Ultimate Alien.