I'm replaying TLJ, and have just gotten through the part of Chapter 2 where Westhouse tells April his story about traveling to India, then Tibet, then across the Divide. He describes Manny Chavez, who helped him, as tall, dark, cryptic, and "smokes like a chimney." And April agrees, except for the smoking part.
And you know what I thought then? What I would like to be true (but which is, I think, impossible) is that Manny Chavez is not, in fact, Cortez, but is in reality a different form for Jacob McAllen, the Green Kin. 'Cause in light of Dreamfall, Chavez is a super jerk - basically, setting Brian up to experience something horrifying (and likely, condemning him to possession by the Undreaming, and all the nastiness that's tied to) - and that seems out of character for the Red Kin. The Red is probably the Kin who helped set up the Sentinel, and Cortez in TLJ seems pretty concerned with preserving the status quo. So sowing the seeds of destruction through Brian seems really out of keeping with his actions in TLJ.
You know who it would be in character for? The Green Kin - McAllen, using the same human face as the Red, but different mannerisms -- like maybe smoking, and having a creepier voice?
I know it's not the case, and that Chavez = Cortez, but boy, I wish it were. The story would make a ton more sense to me that way.