Leetu

Leetu is LE2, a prototype legionary grown from the Emperor and Erda before the Primarchs had names, wearing beak-helm plate stamped with the designation he took for a name. He calls them parents. He only ever obeyed her. When she scattered the infants and ran, he stood in the doorway and stayed there for a war's worth of years.

Erda loaned him to John Grammaticus as a bodyguard. He walked Terra's siege with Oll's company, drew pictures when nobody was looking, and lived long enough to stand in Lupercal's Court. He cut Sanguinius down from the hooks, saw the Four in the dark after Horus threw him, and lived through that too.

He came back with a tarot of the Throne in his hand, which is part of why Dorn put a corpse on a seat instead of a pyre. Afterward he sat alone, shuffling cards, waiting for a debrief the Imperium was not built to give.