Oscar is a member of the Greil Mercenaries and the oldest brother between himself, Boyd, and Rolf.

He's a calm, cheerful, and polite person who tolerates the antics of others quite nicely, though he appears to fear the laguz, specifically the bird tribes. He's known to be an excellent cook but doesn't show any outward arrogance to the fact.

Voice reference: Kilik (Grant George)