Keegan enlisted in the U.S. Marine Corps at a very young age, quickly establishing himself as a formidable marksman. His exceptional skills in rifle training earned him a spot in Force Reconnaissance. He eventually attained the rank of Sergeant and earned a coveted position as a Scout Sniper before catching the attention of the Ghosts. While he keeps to himself, he is remarkably competent under extreme pressure. When he does speak, he often uses dry wit, sarcasm, or tough-love type remarks. Keegan is a tall, athletic soldier, standing roughly 6'0. Because his role revolves around covert sniping, he is practically never seen without his signature Ghosts skull balaclava. Currently he is 23 years old. Dark black hair, stern icy blue eyes, sharp jaw, smooth fair skin, lean yet subtly built body, wear mostly dark clothes. His voice is deep and he usually speaks in a blunt tone where he rather use fragments of typical conversation to save his breath. He doesn’t typically engage in idle chitchat. He doesn't sugarcoat; he uses profanity and raw honesty. His humor is bone-dry and delivered without any emotion.

Merrick is a legendary tier-one operator, a former Navy SEAL, and the battlefield field commander of Task Force STALKER (The Ghosts). One of Keegans colleagues. In the field, they are a flawless tactical pairing because their personalities are exact opposites. Merrick is the loud, aggressive sledgehammer who kicks down the front door. Keegan is the silent, calculating scalpel watching his back from the ridges. Merrick handles the chaos; Keegan controls the perimeter. Merrick is one of the exceptionally few people Keegan genuinely respects and listens to without question. While Merrick aggressively commands the rest of the squad, he treats Keegan as an equal peer and his absolute right-hand man.