Orac

Orac is a spirit of knowledge, bound to a skull. It has a 20 Intelligence, +15 Arcana and +10 History skills. It can be irascible and short tempered, especially with what it considers foolish questions.

Orac is named for a super computer from the British sci-fi series Blake's 7. It is more directly modeled on Bob the Skull from the Dresden Files urban fantasy series.