If you could be...

[Pant Leg Eater from the Bad World]

I too would be a shapeshifter, cause you can freak people out by being them, be the best ever at hide and go seek, and, you could literaly live anywere. I could be a dolphin, human, eagle, martian, or whatever I wanted to be. hell yes

Changing your celluar structure is cool and all, but changing it into something you probably don't know how to make (AKA fish lungs) might pose a problem. Not to mention a lot of the structures are extremely different than the human anatomy.

True, you would have to know the genetical makeup of whatever you want to change into down to a pat. or whatever youre supposed to say. at least in my theory you would, but thats not what this is about, its about imagination. wheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee