Brother Dusk

Brother Dusk is one of the main characters of Foundation Season 1. He is the eldest living member of the ruling clone Empire. As a retired Emperor, he is unrepentant, opinionated and not to be underestimated.

Brother Dusk is the retired Emperor of the Galactic Empire, serving as an advisor and mentor to his "brothers", the current Emperor Brother Day, and the ascending Emperor, Brother Dawn.

(Source : Foundation Fandom)