Well, in the Super hero rpg setting Halt evil Doer, the Aesir Pantheon is kind of in reverse of this; with the Aesir being portrayed as bad guys because they want to set off Ragnarok, while Loki, not necessarily a good guy, wants to stop it (since, hey, he dies in Ragnarok too). To this end, Loki empowered the settings Thor Expy, Ymir the Radioactive Viking (yes, I'm serious) to act as his champion and stop Ragnarok.

Its a great setting to pick up, I enjoy it a lot. Its for the Mutants and Masterminds game system.