Cicero is a member of the Dark Brotherhood during the Fourth Era. The player may first encounter him on the road north of Whiterun, where he is attempting to transport a coffin bearing his "mother." Later in the game, he is found in the Falkreath Sanctuary during the Dark Brotherhood quest series, then at the Dawnstar Sanctuary. It is revealed that he is the Night Mother's Keeper.
Cicero is set apart by his noticeable psychosis, and his Dark Brotherhood outfit is made to resemble a jester's.