Gaius van Baelsar is one of the main antagonists of Final Fantasy XIV: A Realm Reborn. Known as The Black Wolf, he is a ruthless general of the Garlean Empire, spearheading the campaign against Eorzea in A Realm Reborn. Unlike his peers in Garlemald, Gaius is against needless destruction and carnage and believes it is the duty of the strong Garleans to care for the weak Eorzean savages. Nevertheless, he is manipulated by Ascian forces to betray these ideals. Though left for dead in A Realm Reborn, he reemerges in Final Fantasy XIV: Stormblood, as Shadowhunter - mercilessly hunting down Ascians to save his home.
In Final Fantasy XIV: A Realm Reborn, Gaius was voiced by Richard Epcar. From Stormblood on, Gaius is voiced by Michael McElhatton.