Those are the only two I can remember showing up from the comic books.
Captain Cold in the televison show, was a hitman who used, you guessed it, a freeze weapon to kill his victims. He first appears killing off local mobsters, before turning on the very crime boss who hired him in the first place, and then sets his sights on the Flash. He doesnt wear the infamous parka (trenchcoat instead), and is also presented as being albino.
I wouldnt say he was as memorable as Hamill's performance as the Trickster, not by a long shot. However, I found the episode pretty cool. And certainly more entertaining than other episodes.