Sebastian

Sebastian appears as one of the many one-off or recurring voices populating the Futurama universe, a minor figure glimpsed rather than dwelt upon. The show rarely slows down for him, and he exists mostly at the edges of Fry, Leela, and Bender's chaos, functioning as color rather than a driver of plot.

Maurice LaMarche's gift is elasticity — the same actor who booms as Morbo or agonizes as Kif can drop into a smaller role like this and give it a distinct texture in seconds. Even a brief appearance benefits from his instinct for comic timing and vocal specificity, the hallmark of a voice actor who never treats a small part as disposable.