Isaac was once a loyal member of the Church of the Unnamed One though his passion was studying myth and history. He aided Aria Wren a number of times until she was branded a heretic by Father Jacob; though it took some convincing he was eventually persuaded that the Unnamed One was in fact Enyalius and helped the Heroes locate the five fragments of the God Killer Blade.
These days Isaac serves as a member of the Church of Sabine, though he still spends most of his time with his nose in a book.