Merrick is a Sergeant in the 85th Vendoland Regiment of the Imperial Guard during the events of Warhammer 40,000: Dawn of War II. He returns as one of the Imperial Guard campaign's heroes in Warhammer 40,000: Dawn of War II – Retribution.
Sergeant Merrick is a practical addition to the group. He is a veteran guardsman and has seen extensive combat over the last decade. Merrick’s world view is in sharp contrast to the others, as he fights for his squadmates and brothers in arms first, and the Imperium second. His experience fighting has taught him a great deal about the sub-sector’s worlds, and Merrick’s base ability is Infiltrate, allowing him to go undetected by enemies and gather intelligence. His Flare ability reveals an area, causing enemies in it to take extra damage, and at higher levels he can also call in an Artillery Barrage on his active flares. He may be a bit bitter and cynical, but the good Sergeant can fix most problems with some well directed firepower.
He was surprised by the Lord General's competence.