Roboute Gulliman, Primarch of the Ultramarines

Roboute Guilliman is one of the central figures in the Warhammer 40,000 universe. He is the Primarch of the Ultramarines, one of the twenty genetically-engineered sons of the Emperor of Mankind. Known for his strategic genius and leadership qualities, Guilliman was instrumental in the Great Crusade, a campaign to reclaim the galaxy for humanity.

After being critically wounded during the Horus Heresy, Guilliman was placed in stasis and remained in a near-death state for millennia. In recent times within the Warhammer 40,000 lore, he was revived with the help of advanced technology and the intervention of the Eldar. As the Lord Commander of the Imperium, Guilliman has taken up the monumental task of leading humanity in the dark and tumultuous 41st millennium, striving to restore order and fight against the myriad threats that assail the Imperium from all sides.

Guilliman is renowned for his codex, the Codex Astartes, a set of rules and guidelines for the organization and deployment of Space Marine Chapters. This codex has become the cornerstone of Imperial military doctrine. His tactical acumen, unyielding resolve, and vision for a united humanity make him a pivotal character in the ongoing saga of Warhammer 40,000.