Board Thread:Questions and Answers/@comment-4330957-20140213133254/@comment-4848837-20140213155028

Party King wrote:

So Who is he? It's probably not that either. Not because we haven't seen it before, but because there are innumerable situations in Omniverse alone where adjustment would've helped Ben. Not to mention, adjusting seems like it would change how the alien's internals actually function.
 * 1) Swampfire is used on Earth, full of oxygen and Carbon Dioxide, which I assume he needs to survive. Maybe the Omnitrix was forced to adjust?  maybe the change in appearance is do to the change in the environment?