While I was in the States, I picked up a copy of the Ultimate Brick, and finally got a look at Grond's character sheet. Now the Big G is supposed to be the Hulk of the CU, as I understand things, well-nigh unstoppable, a thing of terror and so forth.
But his stats seem pretty underwhelming for this role. True he would mop the floor with most 350-point Bricks, but it seems any reasonaly powerful fire-based character or mentalist would wipe him out. A paltry 2 DEF 2 BODY Mental Paralysis would take Grond out of the fight. Doesn't seem appropriate for someone touted as a Major Supervillian Threat. With his Susceptibility to Fire, a bunch of GIs with flamethrowers could take him out.