45 Votes in Poll
Ben gets master control at the age of 18 (not 100% confirmed but azmuth said so)
And both Ben and gwen share the same birthday and are 16 at the end of omniverse.
Why does the omnitrix time out at if the master control let's you stay alien as long as you want
It doesn't time out, but if the user is hurt too much or faints, it forces them back into their normal form. It has the appearance of an time out but isnt.
What do you think?