Griffin Brock

Griffin Gabriel Brock, self-styled "Granite", is a superhuman criminal and one of the many people infected with Austin Chambers' nanites. At the night of the explosion, Griffin was at a construction site when he was infected with nanites. Now given the ability to turn his skin into a type of granite stronger than any, he faced Hunter Bradley/Arsenal.

Despite not having Hunter's level of skill, Griffin's strength and durability proved to be a tough match for Hunter. Creating clones to overwhelm both Hunter, and Lyra Evans/Angel, his skin reverted to normal upon receiving an impact from Nathan Schmidt/Hit's Smash Hit technique, and was placed into custody. However, Griffin trained his body and returned a few times to challenge Wes Gates/Stryker, but was defeated a third time, with the help of Geomagnet. Griffin was later recruited into the Brotherhood but was defeated and arrested again.