You. The player touched the GhostWalker, making you pass out because your soul wasnt pure. Waking up in the dream world, You saw 4 creatures, Or the embodiments of emotions, Greed, Solitude, Fear and Hatred

Greed: Dolla Dolla Bills

Solitude: Everyone will be alone... after they meet me... oooohh...

Fear: C-CAN'T SEE ME! hiding as a tree

Hatred: disguised as BuilderMan ...