Leto au Augustus was Nero au Augustus' favorite disciple. This was so much so that Adrius au Augustus, Nero's son, often referred to Leto as a replacement for Nero's lost son Claudius. Leto is described as seeming kind-hearted and stoic.
Leto was killed visiting the Citadel with the rest of the Augustus house, decapitated by Karnus au Bellona. Instants before his death he seemed to freeze up, presumably from some sort of paralysis coming from a dart shot by Adrius in the chaos.