Board Thread:Questions and Answers/@comment-5787678-20130307142610/@comment-1622149-20130313034255

it was never confirmed that the Ben 10,000 still had the Ultimate omnitrix ,could have been his current omnitrix and he added the Ultimate feature whit Benvicktor,Brainstorm and Grey Matter.

he used Benvicktor,Brainstorm and Grey Matter to create Ken omnitrix in the original Ben 10,000 time line.