Hargon
From Dragon Quest Wiki
Hargon, Sorcerer of Rhone, is the primary villan in Enix's Dragon Warrior II. His minions attacked Moonbrooke Castle at the beginning of Dragon Warrior II, killing the king and destroying the palace.
Although the final objective of the descendants of Erdrick from Middenhall, Cannock, and Moonbrooke; Hargon was attempting to revive the God of Destruction, Malroth.
Hargon also appears in Dragon Warrior Monsters and Dragon Warrior Monsters 2.