OVA
Description
Dahau commanded Calamity Raven, an Imperial special forces unit comprised solely of Darcsen soldiers. He grew up in the East Europan Imperial Alliance enduring brutal persecution due to his Darcsen heritage, fueling his commitment to securing an independent Darcsen nation.

Early in his life, Dahau organized an armed Darcsen resistance group, including his wife, Miga. Imperial forces crushed the resistance, resulting in Miga's death. Dahau survived multiple assassination attempts, gaining legendary status among Darcsens. Following this failure, he sought external support, allying with Yggdist Cardinal Gennaro Borgia. In exchange for Borgia's promise of an independent Darcsen region, Dahau agreed to serve the Cardinal's interests. Borgia leveraged his influence to embed Calamity Raven within the Imperial military under Prince Maximilian's command, though Maximilian remained wary of Borgia's motives.

Dahau commanded respect for his military and political acumen, maintaining an outwardly humble demeanor while privately considering himself inferior to no one. His tactical prowess and charisma earned him the loyalty of his followers, who saw him as a symbol of Darcsen resilience. During the Second Europan War, Calamity Raven repeatedly clashed with Gallia's Squad 422, "the Nameless." Dahau attempted to recruit Darcsens within the Nameless to his cause, successfully swaying Gusurg, who defected and became his sub-commander.

After Maximilian's defeat and the subsequent cease-fire, Dahau's position weakened. Recognizing Borgia would not fulfill their agreement, he killed the Cardinal to seize control of the ancient Valkyrur superweapon, Valkyria's Hammer. He intended to destroy Gallia's capital, Randgriz, with the weapon to demonstrate his power and galvanize support for Darcsen independence. Facing invasion by Gallian forces would violate the cease-fire and jeopardize peace, the Nameless intervened. They infiltrated the Valkyrur ruin and disabled the weapon. In his final moments, Dahau saw a vision of Miga before dying.

Dahau also appeared in the crossover game *Samurai & Dragons* as an R-class monster card, categorized under the Mercenary race with the unique skill "Hero of Darcsen."