Kadoc Zemlupus

Kadoc Zemlupus is one of the seven Crypters, Masters attempting to supplant the Greater History of Man with that of the Lostbelt in Fate/Grand Order: Cosmos in the Lostbelt. He is the Master of Caster Anastasia. He was formerly one of forty-eight Chaldea Master Candidates and a member of A-Team.

(Source: TYPE-MOON Wiki)