Bismarck is a tall slim man with broad shoulders and a very angular face. He wears a blue face mask, which holds up his red, spiky hair. He wears a green jacket over his blue armor which covers his whole body.
As a Marine, Bismarck has a strong sense of justice. It is unknown whether he believes in moral justice or absolute justice. He is fairly weak willed, as he easily fell under the control of the Shichiseiken. As Saga's subordinate, he holds the Marine in high regard and respects him.
Near the end of the movie, he was challenged and defeated by Sanji despite the fact that he was wearing armor over his body. Sanji instead aimed for his face which was the only part of him that wasn't covered in armor.