The unusual creature in our fanart Centaurworld cursor pack is The King of Leaves, a minor character from Centaurworld. He is supposedly the ruler of all leaftaurs. His favorite activity is celebrating his birthday. While he may be the ruler of all leaftaurs and the treetaur stolen by Glendale in the What You Need episode, he doesn't seem to command all of plantaur-kind as Gebbrey wasted no time kicking him aside to get to his long-lost jacket in The Last Lullaby.
