Misty is a microfur, 5ft is his maximum and default height, but is often found a lot smaller. Typically, he elects to shrink down; sometimes (ok, quite often) finding himself unable to grow back bigger when he wants to.

He's generally friendly, and likes to be helpful, and can sometimes be a little nervous around macros or relative macros if he's not been so for a while.

Also, he can be shrunk by others. Typically just saying for him to shrink works, but he often shrinks accidentally when he sneezes.

(art here by https://www.weasyl.com/~garnetto - both main and thumbnail)