Thanks, you went there, thanks and thanks!
Here is Gaunt, a man who needs to consume solid matter to survive. After he consumes an object, all that is left is ash. By consuming an object, he sates his hunger and gains strength and invulnerability. He was stopped on his first rampage when he consumed too much and became so dense, he was unable to move. He escaped his prison cell when Windshear escaped and is now on the loose. He appears to have his hunger under control, as he has not gone on a vicious rampage as of yet.