It sucks to be the savior.
Alex is half-human, half-something else, and while this would ordinarily make him of Kin, for the most part, refers to human wizards - that is, h..., his particular gene-set is utterly unique, and in fact, could only be conceived by the power of the Dream.
He makes his initial appearances in Name meaning: Night (Italian - he picked that one) Other na..., though they may be easy to miss. Not to worry, though; the book after Notte is based entirely on him.
(As an author-aside, he was my first fully-developed original character. I’ve had him in my head for 30 years, and it’s a delight to finally be able to reveal him to the world.)