If this gets 7 likes I'll put the omnitrix in my new ultra-serious Fallout Equestria story.

6452043
Do it

6452073
Aaand done.

He calls his Brainstorm alien Headcrab.

6452043
Agreed Upgrade is the best alien in Ben 10, He was always my favourite

6452940
Mine too. If Ben carried around an alien weapon to use in his Upgrade form, he'd be the ultimate alien.

Speaking of which, I want to know what Ultimate Upgrade would look like.

6452980
Well here are a few images of Ultimate Upgrade, tell me what you think of them

Cool! That's it, my Fallout Equestria story's going to have Ultimate forms. The character who gets the watch is getting the Omniverse version that does regular and ultimate forms.

Hmm... But should it also have Bi-Omnitrix fusion powers?