Obviously, the outcome of the Dawn of War single player campaign makes him an enemy. However, for the majority of his life and career he was loyal to the Emperor and a close friend of Gabriel.

Should we list him only as an enemy or both friend and enemy?

If I had to choose I'd say we list him as both friend and enemy, but I could be convinced otherwise.

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Let me provide a little context for those that haven't played Warhammer 40,000: Dawn of War.

Brother Librarian Isador is a close friend of Brother Captain Gabriel Angelos. During the course of the game Isador betrays Gabriel and turns towards the forces of evil. He is then slain by Gabriel and dies a heretic.

Isador was a loyal servant of the Emperor of mankind for most of his life, but dies a traitor.
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