Here's a Ben 10 pic I made with one of my original aliens. Based on Alien Force, the group is in a somewhat small car, and Ben decides to transform into a smaller alien to make room. But Ben ends up getting an Esviran and does the opposite.

For information on what an Esviran is, please refer here: https://www.weasyl.com/~oddymcstrange/submissions/2170809/updated-esviran-reference-sheet