In an eclectic campaign our group is playing, we found it necessary to create a demon of completely unspecified nature. We decided on this oracle which has been used to fun effect in three systems thus far:
1. Choose a Traditional Fantasy Element (TM). Examples: Fire, Water, Earth, Air, Dark, Spirit, Light, Wind, Ice, Lightning, etc.
2. Choose a Non-Traditional Element. Examples: Masks, Staircases, Bats, Desiccants, Rogues.
3. Choose an Element from the Periodic Table. Examples: Neon, Helium, Iron (booooo), Mercury, Arsenic, Oxygen.
Now create the demon's stats/powers/moves/tags/whatever in your system of choice. It is "A Demon of Fire and Masks and Neon".
This procedure has resulted in some very eclectic monsters, much stranger than we would otherwise have come up with. The Demon of Earth and Staircases and Mercury, for example, was pretty weak in direct combat but excelled in weird ways at traps and ambushes, while the Demon of Fire and Masks and Neon was a pretty standard elemental-type-thing but with very memorable color.
Anyone have other nonstandard oracles they like for demon/monster/etc generation?