The Head of the Oak Family, and the representative of The Family of Penacony, who is organising the Charmony Festival, where his younger sister, Robin, will be performing. Over the course of everyone's search for the Watchmaker's Legacy, it's revealed that Sunday is actually a follower of the Order, conspiring to entrap the galaxy in a never-ending dream in a misguided attempt to grant everyone happiness. Following his defeat, Sunday becomes a fugitive seeking to create his ideal paradise in a less dubious manner.