Jago Sevatarion

Jago Sevatarion, known as Sevatar, was First Captain of the Night Lords and head of the Kyroptera under Konrad Curze.

A Nostraman officer, he is credited with naming the VIII Legion’s terror doctrine in blunt terms when Imperial diplomats sought euphemism. He directed Legion operations during the Thramas Crusade, fought Sigismund to a recorded standstill, and was later captured by the Dark Angels at Sheol; accounts of his captivity and fate diverge.

He disappears from the primary Heresy narrative before the Siege of Terra. Night Lords tradition continues to cite him; whether he died in captivity or abandoned the Legion remains unsettled in sources.