Bai Toatsu commands as the Northern General of the Republic of Rekka, holding significant military authority. A warrior defined by Rekka's values of honor and strength, he maintains a stoic, serious demeanor that rarely reveals emotion. His fierce loyalty drives him to shield comrades and subordinates from harm. This dedication extends to Rekka's wartime cause, where he sees military victory as the sole path to peace.

The war's end triggers a profound crisis for Bai Toatsu. Stripped of the warrior identity that shaped his entire purpose, he descends into disillusionment and alcoholism, struggling to find meaning in peace.

In combat, Bai Toatsu summons the Briheight armor Senpu using a Bind Warper device. The armor's capabilities stem from his personal Conviction, the core belief fueling a Briheight's power.