Antero

Antero was the scholar/sage who commissioned Antero's Bestiary as told in Tales From Myth: The Fallen Lords. He was the master of Ewan and used him to gain information for him. He valued history and knowing the many different cultures of the world.

Fanon Description
Antero was probably trained by Nelarn, but this is just an estimated guess at best. Perhaps, with the many mages listed in the world--Alric may have planned to use such individuals in the reestablishing of the Avatara order.

Powers
Antero, as an Avatara during the events of Myth II: Soulblighter, could use all the same powers as Nelarn.