For other uses, see Coomer (disambiguation).
Agent Coomer was a Black Mesa security guard seen in Half-Life: Blue Shift manning a lot of desks and offices. His name can also be heard in a Black Mesa Announcement System announcement in Half-Life: "Agent Coomer, report to Topside Tactical Operations Center."
Coomer is a security manager and an agent working for Black Mesa. He can be seen operating a security desk and also can be found in the shooting range. When the Resonance Cascade occurred, Coomer made it topside to a fenced in generator and was wounded by a Xen alien. Eventually, Coomer was found by Barney Calhoun and told Barney how to operate the generator as his last words.
- Like his scientist namesake, "Coomer" is a reference to Greg Coomer, employee at Valve, placed there as an Easter egg.
- Cooper is the only guard to be called agent