dessert is a hallucination. climber also known as "dessert" was a forced test subject in an insane asylum. they injected heroin, fed him drugs, and a lot more. till in every restless nights he started to hallucinate he made up a fantasy world full of rainbows and candy he had episodes where he imagined himself as this happy and energetic climber in the world he made up, as so called dessert climber whenever he took more drugs the more energetic dessert got. in every schizo episode