Thread:Dioga beta/@comment-4816710-20140201223216/@comment-5543071-20140202174456

The way that I have it, is that John can turn into any alien he's seen that is stored in Primus. Since Ultimate forms were a result of the Ultimatrix and not in Primus, he cannot turn into the Ultimate forms.

That is, not without Albedo's stabalizing device that he used.