Presus was a character from a Gallifreyan fairy tale who battled against "Death's messenger", a being invisible to the villagers and whom the Eleventh Doctor thought was likely a Krafayis, telling the fairy tale to Amy Pond when they confronted a Krafayis with the assistance of Vincent Van Gogh. He was the son of the village prelate and was the laziest person in Slothe, which was already full of lazy people.
After three days, Presus defeated Death's messenger and fell into an eternal sleep where he dreamed of the people of Slothe who had been killed by Death's Messenger. (PROSE: Blind Fury)