Mikhalinn (Seth Mastiphal)

Mikhalinn ("Mic-al-in") is the arch-antagonist of the Blood Moon series and masterminds many of the events of the books from within or without the world, as every warlock in Thaelis-Y'Arda ultimately answers to him. He is Oblivion's second avatar (the First Dragon, Zoor'Ztsh, came before him) and is intent upon the eradication of all reality through Annihilation. He was behind the Scourge of Shadows, and in the series attempts to finish what he started hundreds of cycles ago before his demise at the sword of Sorin-Sam on the battlefields of Tolnor. Mikhalinn's original identity and name are unknown even to his closest servants, and his mortal name lost to time. The name he now takes means "Dark Lord" in Tartarian, the dark speech of demons.
The name "Mikhalinn" is more accurately speaking a title granted to the Avatar of Oblivion, being derived from a combination of the Tartarian words "Mikhul" (meaning "black", "dark", or "shadow") and "Alinn" (meaning "lord", "king" or "ruler"). It was a title held by Seth Mastiphal's predecessors, an unknown It'Ept priest and the demonic dragon Zoor'Ztsh before its ascension to divinity.