Bau

is the largest member of the Dark Ones, noted for the veil in front of his face and his large club-like weapons, which could be tetsubos.

Appearance
Bau wears the same green armor the rest of the Dark One's wear, but he also wears a veil to cover his face. Upon uncovering the veil it is found that he has horrible skin and teeth, making him look very unsightly. He carries two large tetsubos.

Personality
As the first movie revolved almost entirely around Senna, the deuteragonist of the film, the Dark Ones all received little character development. As such, both Bau and the other Dark Ones were viewed as "expendable, cliched bad guys" by fans and critics alike. Surprisingly, Bau did not show any individual qualities of his own, except when he underestimated Renji, stemming from arrogance.

History
All of the Dark Ones were once a part of the Fallen House of Ryōdoji, exiled 1000 years ago to the Dangai Precipice World. Amazingly, the group somehow managed to avoid the deadly current flowing through the entire Dangai, and resided there for many years. It was in this world that Bau, along with the rest of the clan, discovered the souls that evaded transmigration and turned into wandering ghosts: The Blanks. The Dark Ones learned to harness the Blanks as an energy source for their own power and learned everything about them, eventually formulating a plan for revenge against Soul Society. Bau and the rest of The Dark Ones migrated to the Valley of Screams some time ago.

Memories of Nobody
Bau was first introduced with the rest of the Dark Ones (excluding Ganryū) when Jai attempted to escort Senna to the Valley of Screams. Later on during their second invasion Bau battled against Renji Abarai, gaining the upper hand until he is ordered by Ganryū to leave. After the group captures Senna, Bau stays by his leader's side, until Ichigo infiltrates the Valley of Screams. He and Jai fight Ichigo as a team, clearly having an advantage, until Lieutenant Abarai and Rukia Kuchiki arrive to help. Jai takes on Rukia while Bau fights Renji's Bankai, and seemingly destroys it. Bau believes himself to be the victor, but Hihiō Zabimaru proves far more durable than expected, recovering from the attack as if it never occurred. Bau is killed by Renji shortly after.

Powers and Abilities
Blank Manipulation: Like all of the Dark Ones, Bau could manipulate the Blanks for various purposes. He was not seen using them in any unique method other than increasing his strength.

Dual Tetsubos: Bau wields two Tetsubo, similar to the one Jinta Hanakari uses, only bigger and with a different design.
 * Explosive Impact: Whenever Bau hits someone with his Giant Tetsubos, an explosion is created between his weapons and the opponent's. He used this ability against Renji, seemingly destroying Hihio Zabimaru.

Enhanced Strength: Bau is very muscular, and was able to use his strength to overpower a Lieutenant for a moment. His Dual Tetsubo are also very heavy, and to use such equipment effectively in battle shows just how strong he is. Flash Steps Expert: Bau was able to use Shunpo at least up to the level of a Lieutenant.

Quotes

 * "What the Hell?" (the only words he spoke.)

Trivia

 * Bau was the only Dark One who almost never spoke, except when he was surprised by Renji's Bankai after it recovered.


 * Bau was the only Dark One who did not fight a Captain, though he still fought against a Bankai.