Jack of Hearts
Well, there's a Joker out there, so why not a Jack of Hearts? Jack Hart (clever name, no?) has an interesting origin story: he was born to a scientist father and an extra terrestrial mother, and soon developed "energy abilities" that were far too powerful for him to control. His father developed an inhibitor known as "Zero Fluid," but after he was accidentally doused with the stuff, which theoretically should have killed him, it instead unleashed the full extent of his powers. Then he fashioned that awesomely cheesy costume and the rest is comic book history.