I know. Aren't they all?
Deep Sea News has compiled a list of the Best 27 Deep Sea Species. It includes all manner of weird and wonderful critters —the armour-plated scaly-foot snail, the … ahem … hairy vent snail, carnivorous sea squirts, carnivorous sponges, worms that look like a pig's arse, worms that eat bones, the giant deep sea isopod (Bathynomus*) ... Oh, yeah, and some fish too, if you like looking at vertebrates.
Check out the top two here and here. The post on #3 has a list of species 4 to 27.
* It should be Bath-enormous. An opportunity missed there. Along with the recently-described octopus Wunderpus, for which I suggested the name Glamourpus. Not that anyone asked my opinion but I gave it anyway, being generous like that. (You can download the Wunderpus paper from Molluscan Research. 804 KB)