Kayvaan Shrike

Kayvaan Shrike is the Chapter Master of the Raven Guard.

Official Canon
Shrike became Chapter Master during the Damocles Gulf crusade against the Tau, when the previous Chapter Master was killed by Commander Shadowsun. Shrike took the initiative and stepped up to become the new Chapter Master. While the rest of the Raven Guard will engage the enemy, Shrike will often serve as the rear guard to escort fleeing civilians or reinforce other imperial forces.

TTS Canon
Kayvaan Shrike and the rest of the Raven Guard were summoned to meet their Primarch, Corvus Corax, for a mission to rescue Terra from Magnus the Red. Much like his father, Shrike is very polite and apologetic, often blaming himself for unfortunate circumstances.