Théodoric the Great

Théodoric the Great was a notable Ansis (Chapter Master) of the savage and unrelenting Marauding Eagles Space Marine Chapter, and is also the only Ansis widely known outside of the Chapter by the wider Imperium for his heroic role as a determined protector of the Imperium.

Background
This Ansis earned his moniker during the century-long Halo Scourge's Invasion. His dedication to the Imperium was only equaled by his strategic acumen. Of all the Eagles' leaders, he is described as the coldest, a determined and patient warrior, who rose to prominence among his more savage brethren because he was deadly in battle and so charismatic that none dare pretend that he wasn't fit to lead grand-sons of the Khan. He is also the only Ansis widely known by the Imperium.

Indeed, where his predecessors were content to preserve the Chapter's memories in song, legends and allegorical stories, he was the first to establish an actual archive, where data was compiled scrupulously, even if he never managed -indeed, never wanted- to change the Marauding Eagles favored means of preserving their past. He was also one of the very few Ansis to lead his chapter away from Gauntgund and the savage border this world lies on, participating in several minor but still important actions with the larger Imperium.