Superhero AU Quodo is tough for me because Odo is basically a superhero already, so it's hard trying to change Quark to match him. I'm also torn between having Odo and Quark both be superheroes on the same team (who butt heads) or to have Odo be a hero and Quark be a villain (but of the variety who spend more time flirting with each other than fighting each other).

So yeah, Odo is a shapeshifter who is also impervious to most things. Quark, if a superhero, would have a pretty minor superpower, I think, like the ability to create fireworks a la Jubilee or the ability to implant mental suggestions but it takes a while and only works on one person at a time. Or super-hearing -- just something that is situationally useful if you're doing a heist or something like that, but otherwise not a superpower you'd want to bring to a fight. For this reason, he's not particularly into the whole superhero thing except when it brings him celebrity and fame, and this kind of annoys Odo. XD

For supervillain Quark, I think he would either have no superpowers or very minor superpowers again, but he is just very dedicated to doing crimes. These crimes are pretty small-change and so Odo probably *should* focus his efforts elsewhere, but Odo is too much of an obsessive to let them slide and also Quark makes them purposely audacious to bait Odo. And sometimes when Odo comes to put a stop to Quark's activities, Quark will subtly drop some information about things happening in the criminal underworld he thinks Odo should know about and then disappears. Batman/Catwoman dynamic.

Those are some of my superhero Quodo thoughts. Hope they are entertaining!