One of the two “blue wizards” (Ithryn Luin) among the order of the five Istari™, they are mentionned in the Unfinished Tales under the names : Pallando and Alatar. This one could be Pallando as his quenya name was Rómestámo (“East-Helper”) (mentionned in the History of Middle-Earth vol. XII : “The Peoples of Middle-Earth”)