What would you like to know? (Please type a question mark (?) after your question.)

What do you mean? In Ultimate Alien, his last new alien was Ultimate Way Big. The last alien he transformed into in Ultimate Alien was Chromastone. The franchise is not over yet, Omniverse shall begin soon. If you want the answer to this question, look on Ben 10 Answers, not Ben 10 Fan Fiction Answers.

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