Elongated Man
MMMmmm good! There are few drinks on the market better than Gingold, and I’m not just talking about taste. No, if you want to end up being a contortionist, much like Ralph Dibny did, then it’s the only drink for you.
Of course, for Dibny, the drink reacted with his DNA to turn himself into a metahuman, but that really doesn’t have much to do with the quality of the beverage. After the reaction he became Elongated Man, which basically means all the things you think it would. He can do everything that elastic can.
He was pretty liberal with revealing his identity to the public, which I think adds a cool change of pace for the JL. With so many characters who have super secretive alter-egos, it’d be nice to have at least one guy who’s fairly open about it. Also, the fact he was a detective adds an extra layer which could open a lot of doors for the DC films. Yes, Batman is the world’s greatest detective, but by now the other aspects of the character have been so built up that I doubt Warner would be willing to take the risk of focusing on the Dark Knight’s abilities in that realm. That leaves the opportunity for Dibny to be the PI of the bunch.