Väinämöinen on a Harley-Davidson.
The actual character is a bit boring, mainly because Kalevala is (for the most part), but the one in the shirts they sell in fairs in the summer looks badass:
Not the best one I've seen, but still cool.
as for the classic critters, I like vampires. Especially the kinds in the Underworld series and Darren Shan's Cirque du Freak canon.