Kritter was one of the many prisioner of the institution of Dr 30. A born mutant over whom the doctor experimented and altered, he grow to become a huge armored mute beast. Broken and easy to manipulate, he joined the warden staff and started to do the same kind of damage than others inflected over him.
When Ferro went to save his brother, the situation ended in a prisioners revolt. Kritter didn’t survive to the inmates revenge.
Kritter was a pastiche of Colossus.