: Well, by GURPS definition, Diarmuid would be a powerful
: Archmage, but not an Avatara.
Because he's not interested in the One Dream and/or not a member of the Avatara's council?
: However, unless Balor somehow corrupted Myrdred by
: threating him with such horrible pain and anguish he
: could not resist, that brings up a problem.
: He is refered in the game (Through the Ermine, I believe)
: as being an Avatara of the Wolf Age.
Why is that a problem? Myrdred used to be one of the Avatara. But he got to power-hungry that he followed the Leveller to learn magics not even the rest of the Avatara knew. Of course there is that whole "bent to [Balor's] will" thing, but that could be psychological ("come on, you know you want it!") or magical in nature.