Cleon XI

Cleon XI, also known as "The Painter" (S1E3), was the first to realize there was something wrong with their genetic lineage. However, this knowledge was only learned in the last few moments of his life before ascension.
He held the title of Brother Dusk during the Trial of Dr. Hari Seldon.
He held court separately with each of the ambassadors from Anacreon and Thespin after the destruction of the Star Bridge.