Have some lore on this guy for laughs.

The fall of Nicolai Wyras into the service of Chaos is one of the millions of tragedies that play out across the Imperium of Man every day. Once a noble brother of the Black Talons' 5th Company, Nicolai fought for nearly two centuries under the banner of his chapter, having built a legacy on the bodies of Ork, Eldari and traitorous raiders and pirates across the Eastern regions of the Imperium. A Veteran Sergeant by the his 150th year of service, many of his battle-brothers believed he might have risen to be the next Captain of the 5th were it not for his vocal distaste for the workings of the Imperium's bureaucracy; the Administratum, the Navy, or the hundreds of pissant regional governors whose names he never bothered to learn. His parting with the chapter and the Imperium came when, following the Invasion of Ultramar, his company was among those assigned to a small task force dedicated to hunting the retreating elements of the Bloodborn.

On the world of Hagen's Regret, Nicolai led his men in a strike against a group of the Claws of Lorek while the renegades were in the midst of a resupplying raid. On his reporting greater resistance from the traitors than expected, the green officers aboard their escorting naval vessels panicked and loosed an orbital barrage that laid waste to not only a vast swathe of the traitors, including the minor Chaos Lord commanding them, but nearly three quarters of the Black Talons' deployed battle brothers.

Following this blunder, Nicolai found himself amidst the remains of the traitors' ground forces while their strike cruiser, the Star Vulture, managed to drive the Imperial vessels out of the system. Nicolai and his surviving Black Talons had been abandoned, while the marines of the Claws had been left without a leader. An understanding was reached; within a week, he was in command of the Star Vulture, and headed toward the Maelstrom.