Mark is a lazy brown rat who's favourite colour is brown, he is also super dirty, submissive & horny often, he basically runs on basic instinct (hunger, sleep, etc...) he wears military clothing not because he's part of the military but because he thinks its hot to imagine being bound in it.

In Universes where they have powers Mark can turn his body into mud & shapeshift.

~ Commission drawn by  secretblack6