Board Thread:Questions and Answers/@comment-5787678-20130307142610/@comment-76.233.128.108-20130313031418

Linkmadara wrote: nope unless there a time travel episode whit Ben from UA.

That would probably never happen. The Bens from both Omniverse and Ultimate Alien are the same age (one year apart at the most), but with different Omnitrixes.