Board Thread:Questions and Answers/@comment-11452788-20130702111039/@comment-11462520-20130702124348

I think that he didn't actually tell what planet he was sending them to. Actually, I believe that the most likely options are:

-He sent every ultimate to the homeplanet of their regular-form species (for example, Ult. Echo Echo to Sonorosia, Ult. Humongosaur to Terradino, etc.). This should be great, like, an entire species learning about how they'll in the future and the kind of adaptations, forms and powers that they will evolve into.

-He sent them all to Primus, the "omnitrix planet". This possibility would be somewhat dark if you think about it, because now in omniverse, primus doesn't exist anymore, therefore the ultimates would have end existing, too.

-Or maybe, Azmuth just sent all the ultimates to a uninhabited planet, for them to be the only inhabitants and live in peace and harmony and such.