The commander of the Crossbone Vanguard's elite Black Vanguard squadron. Zabine is a superb pilot and a clever tactician, and his rapid rise through the ranks has led many old-timers to resent him as an upstart. Though loyal to the Crossbone Vanguard, Zabine harbors secret ambitions of his own, and when he is assigned to train and protect Berah Ronah he sees this as a perfect opportunity to work his way closer to the Ronah family.

As with most individuals who support the Crossbone Vanguard, Zabine believes that the world should be run by an aristocracy political system, with a group of noble aristocrats ruling over the masses of common people. For unclear reasons the person he believes should rule as queen of this government is Berah Ronah, even though the woman herself does not believe in aristocracy.

Zabine firmly believes that people who cannot properly handle their emotions are trash, and teaches this lesson to his Crossbone pilot students. He reminds his former student Annamarie Bourget of this before killing her for betraying him. Zabine considers her betrayal to be his own shame, showing he does care about his trainees.