These odd oracles sit on thrones above a rainbow in ASGARD. If you’re ever passing that way and have a nagging question to get off your chest, by all means pop in for a shot of mead and wisdom.
When Gylfi, the King of Sweden, tried his luck they gave him the complete History of the Universe in spoken word form without even pausing for breath. Naturally he rushed home afterwards and scribbled it all down for the benefit of future generations.
Their names are: HAR (the High and Mighty), JAFNHAR (the Equally High and Mighty), and THRIDI (the Third One Who’s Still Reasonably Mighty). In short, they’re the High and the Mighty and the Third Person singular.
Rumor suggests that they are all actually a manifestation of ODIN, who occasionally feels the need to slip into mysterious mode.