Otto-031 (Earth-4001)

Otto-031 was a SPARTAN-II supersoldier of the UNSC Naval Special Warfare Command, attached to the Office of Naval Intelligence. He serves with Team Black as a heavy weapons specialist, and is designated as Black-Three. He is visually distinguished with the Roman numeral "III" on his visor.

History
The history of Black-Three is the same as his mainstream counterpart up until the end of the Human-Covenant War in 2553.

Personality
Otto is bold, pragmatic, and outspoken, and he seems to genuinely enjoy fighting. He possesses a wisecracking sense of humor and frequently exchanged playful banter with his teammates. However, he is also rational and able to put his personal feelings aside and stay focused on the task at hand, unlike Black-Four, who, despite his calm façade, proved to be prone to emotional breakdown mid-mission. Despite their differences, Otto considers Victor his brother and would not harm him even when Victor was attacking him.