Omni-Enhanced Grey Matter first appeared in the Ben 10 reboot season 2 episode entitled Can I Keep It? where he defeated the Catdobbit. He is voiced by Todd Haberkom.
Appearance
Omni-Enhanced Grey Matter consists of Grey Matter's upper body in a large frog-like suit made out of purplish-grey stone and blue energy. His head and sometimes back are visible above a thick rounded torso with two large shoulder pads with moss growing on it. Long skinny and limber blue energy make up his arms and legs and he has four fingers as well as two-toed feet. He has stone wrist bands and the Omnitrix is located on his chest with blue energy cracking through around it.