Tuesday's Dawn, Noon and Dusk we're melded together with copious amounts of nothing into seven grotesque parts of their whole. Grim Tuesday did this as he required more servants to help him run the ever expanding pit. In order of predence they are Yan, Tan, Tethera, Methera, Pits, Azer, and Sethera. They have the power to erase memorys, kill mortals and according to the Atlas, Poision spurs in their thumbs.
The Grotesque's died when Saturday's Dusk stabbed Yan outside the butress wall of the Pit, As Tuesday had melded them, he had weakened them, and one died, they all died.
The Grotesque's we're replaced by Monday's Dawn, Noon and Dusk's.