Bulat

Bulat was once a high-ranking Imperial Officer. He later decided to betray the Empire when his superior was framed for not giving in to the Prime Minister's agenda. Bulat became disgusted with the Empire that cared more for bribes, than merit regardless of how hard he worked. After leaving the Empire, he joined the Revolutionaries, and eventually Night Raid. His Teigu, Demon Armor: Incursio, is a short sword that can summon a full body armor that enhances his physical strength and allows him to blend in with the environment.

He died in battle at the hands of his former boss. Prior to his death, he entrusted Incursio to Tatsumi.

(Source: Akame ga Kill! Wikia)