This is Firestorm.
Now, the more cunning among you may have noticed that this makes Firestorm, at the very least, a ridiculously powerful demigod, one of the most powerful superheroes imaginable. So you would think that his rogues’ gallery would compose some of the most fearsome villains ever created. Right? Right?
But Firestorm can turn it into talcum powder with a thought whenever he feels like it.
But what’s really depressing now is that the Hyena has become DC’s token Villain You Can Kill Off. The Hyena has died, by my count, three times in the last decade. I have no idea if any of them were this particular Hyena. Maybe the whole Hyena curse or disease or whatever it is nowadays is transmissible, and when you get bitten by a Hyena, you become a Hyena (and thus a third-rate supervillain, good enough to be killed by Jason Todd or Deadshot, probably not so good to appear as a threat in The All-New Atom).
Also: he/she/it is presenting. And that is just wrong.
If her weakness turns out to be liquor, how wrong would that be?
And again: turning into spirit animals and magically affecting games of chance versus “I can convert the air above you into giant rocks” is not a good matchup.
But he is going up against Firestorm. Firestorm’s handle is “the Nuclear Man.” Slipknot’s handle is “the guy who’s really good with rope.” I don’t care if it’s fancy super-rope that Slipknot treated with fancy super-chemicals; Firestorm can still turn it into a puff of nitrogen at will.
Later, Slipknot got his arm blown off in an issue of Suicide Squad, but managed to survive. We know this because he showed up (with one arm) in Identity Crisis, as a prisoner who had taken up the worship of Kobra, DC’s very own third-rate cult leader supervillain with world-conquering ambitions. Understand that becoming the sworn follower of a lame-ass dictator wannabe with delusions of adequacy was just about the best Slipknot could manage.