Shane Carwin is a monster. I honestly think a nick name would spark his popularity and get him to be a house hold MMA name. Being a hardcore fan, I know most all fighters by there real names but I have noticed my friends who are all casual fans only seem to remember nick names like "The Axe Murderer", "The Iceman", etc. It may seem cheesy but it honestly helps build character and retention in fight fans.
How about Shane "Conan" Carwin. Or Shane "The Conquerer" Carwin.
Yes I am a Engineer and more importantly my FANS selected that name for me. I am proud to have it. Lord knows being a Engineer feed my boy and I when sports would not.
"the engineer" is one of the few guys in the UFC that could make decent money without fighting! not to bring down other UFC guys too much but Shane is for sure one of the smarter ones in the biz