Sergeant Major Zero

Sergeant Major Zero is a Zeroid robot and one of the main characters of the Terrahawks series. He was one of the 3 original prototype zeroids built in the early days of Terrahawks and is the only one still in service during the course of the show. The other two were noted as having been destroyed in the line of duty during a rescue mission.

Personality
Zero in some ways is boisterous, arrogant and overconfident in his own abilities, but he is also unwavering loyal to his men, looking out for their own safety and concerns before his own to the point that when Dix Huit sacrificed himself to save him, he opted to face a last stand against one of Zelda's monsters, knowing fully well it would mean his destruction. Despite his strength of body and character however, he is not too bright as evident from his inability to answer the simple math problem of 2+2. He also has a particularly short fuse and early on in the show, his circuits would overload whenever he received information that didn't make sense to him.

Relationships
Like all other Zeroids, Zero is programmed to never tell a lie. Despite this, he has kept information from or exaggerated information to Doctor Ninestein in the past and this has given him reason to distrust Zero's reliability. He seems to hold Mary Falconer particularly in high regard because of her kindness towards him. He also has shown admiration for the bravery of both Hawkeye and Kate Kestrel in battle. Zero enjoys a long standing and sometimes explosive rivalry with the leading Zeroid on Spacehawk, Space Sergeant 101, often getting into arguments about who holds superiority over the Zeroid forces.

Trivia

 * In the Japanese dub of Terrahawks, Zero was given a rather inappropriate high pitched, cracking voice reminiscent of a typical kid appeal character seen in most anime. This is probably due to lack of communication between the dubbers and Gerry Anderson's team about the characters' intricacies and the Japanese bias towards overenthusiastic voices.