Corporal Damon Baird was a dedicated tech-head and professional skeptic. In Baird's world, if something can go wrong, it probably already has. His sarcasm can keep people at a distance, which is why he prefers the company of machines. He believes in the Coalition's cause, but he's often frustrated with command decisions, and the fact the COG sacrifice rights over security. He took offense when Colonel Hoffman promoted Marcus Fenix to Sergeant to lead Delta Squad instead of him. Baird has a history of being promoted and demoted for being outspoken. Damon Baird was a former member of Alpha Squad and has been wearing the uniform as long as Marcus has. He was later reassigned to Delta Squad after the former unit was essentially wiped out by the Locust. He was partially (if not directly) responsible for the deploying of both the Sonic Resonator and the Lightmass Bomb.
Baird's main strength lies in his intelligence, although he is a capable soldier as well. He is probably the closest thing the COG has to a Locust expert as he observes and studies them extensively while engaged in combat. He can even read some measure of their language. And as if that wasn't enough, he excels in mechanics, hacking, repair, and other technical abilities. He treats building a bomb like giving someone a breath mint.
Baird grew up loving machines. It was the only "happy memory" he'd had during his childhood. Baird had originally wanted to go to engineering school, but his father refused to give him his inheritance unless he enlisted in the military. Baird took part in the Pendulum Wars since he served as long as Marcus.