I have a friend and former coworker, Brian Parsley, who is pretty great at making superhero costumes. Great enough that he does that full-time now. He appears in this as "Magog."
It's based on a groundbreaking graphic novel (originally a four-part prestige format series) from 1996 that explored a near-future in the DC Comics world that saw Superman coming out of retirement to try to reign in the out-of-control super-powered folks and fight a cabal of bad guys. There's much more to it than that — there kind of would need to be for it to remain a fan-favorite storyline nearly 20 years later — and if you want to read it, just hit this link.