Amber: Rise Up
Suhuy of House Sawall, Keeper of the Logrus
Suhuy is one of the oldest entities in the Courts of Chaos. He shares a similar relationship to the Logrus that Dworkin did (and now Corwin does) to the Pattern, excepting that (as far as anyone knows) he did not personally draw/create it. He is surprisingly friendly if extremely cryptic. All Logrus Masters have trained under him to at least some extent.
He is a Lord of House Sawall.