Universal Monsters Online is a free-to-play browser fight game featuring, well, the classic Universal Monsters. Developed by Big Point, announced characters to date include:
Dracula,
Frankenstein's Monster,
Wolfman,
Creature from the Black Lagoon and the
Bride of Frankenstein. I'm betting there's more up their sleeve.
Additional characters/content will become available via pay-to-play I'm sure. It's in closed beta test right now, but...I'm keeping my eyes and ears open for when this comes online for real. Definitely need a rematch with Frankie and the Wolfman!