Former world-class strongman Hammer Harrison might have fallen in with the Satan Squad, but don't be mistaken; he's only with that cornball Baron Brimstone because he pays well, and because it allows him to engage in his favourite activity: physical violence. Despite punching with gloves weighted with blocks of solid steel, he has a concept of fair play.

Fiction

 
Hammer Harrison on Marvel Database, an external wiki

Hammer didn't buy in to Baron Brimstone's sorcerer shtick, and had never seen Snake Marston smile. He accompanied Brimstone to a warehouse full of goons who were looking for supervillainous employment. A riot broke out when Duke Dawson egged the crowd on that the Baron and his lieutenants were a freak show, so Hammer used his steel gloves to knock some sense into some of them. Brimstone withdrew, satisfied at the demonstration of their power, and evidently some of the gangsters took him up on the offer of joining the Satan Squad. After Brimstone, Hammer, and Snake reconvened in the Baron's luxury penthouse, the Satan Squad began a carefully co-ordinated crime spree to steal components to mass produce the Sol-Mac device the Brimstone had stolen from Chem-Solar.

Weeks later, as the plan was approaching completion, Hammer and Snake ambushed Duke Dawson, who was about to sell intel to Delmar Insurance's Pamela Quinn. Hammer knocked Pamela out, and suggested taking her back to Brimstone for questioning.

Shortly afterwards, the Satan Squad were in the process of stealing the famed golden bell at the cathedral of St. Gabriella of the Highlands when they were tracked down by Machine Man. Hammer ordered the men to keep working while he and Snake dealt with the superhero. After Machine Man shook Snake off, Hammer fought him one on one, knocking the walkin' scrapheap over to the next roof. Refusing to become a punching bag, Machine Man ripped a chimney from its foundations and restrained Hammer inside it. Baron Brimstone and his Sinister Satan Squad!