Cato Sicarius

Cato Sicarius is the current Captain of the Ultramarines 2nd Company. His titles include Master of the Watch, Knight Champion of Macragge, Grand Duke of Talassar and High Suzerian of Ultramar. He is known as one of the greatest of the Ultramarines heroes, and is also said to be the heir apparent to Marneus Calgar, the Chapter Master.

History
Having been born into one of the ascendant houses of Talassar, Sicarius was trained in martial combat as soon as he was old enough to wield a blade. When he was recruited into the Ultramarines, he earned commendations and swiftly rose through the ranks, eventually reaching the rank of Captain, after serving for decades as Sergeant and Company Champion.

Sicarius perfected the technique of the lightning assault, using it well and commiting his forces to battle, seeming to hardly consider the tactical situation. He proved his ability to adapt well to any warzone. This strategy brought awe to many, including other Space Marines.