One's the fastest man alive. The other... is... uh... really good at archery.
Together, they're a new set for Dice Masters that's now available from WizKids. Though there's much more than just the two named heroes in the set. There's plenty of both heroes and villains to really beef up your collection.
There's a lot of White Lantern characters in there, apparently. But others that you don't see here include Gorilla Grodd, Merlyn, Clayface, Felicity Smoak, and Giganta. There's over 30, total, for you to find and collect.