Rock Creature Concepts

A side project I lent a hand in was coming up with an idea for a new mascot, revolving around the idea of a "dirtbag" character, somewhat resembling a human and rock monster.  There were multiple artists, and work is still being done on the project, but these are some simple concepts for shapes/look of the creature, as well as some color schemes.  Hopefully this project continues, and they ask for more help.