Guy can paint anything!
Need an example? Here is Nels in a rocket ship.
Guy painted it.
He even added stars and later planet Earth. If you ask where he lives, Guy will tell you "I live on planet Earth." Directions home are usually quite simple after that.
Guy can also paint stuff from his imagination. Here's a car. Those stopped existing after they went extinct.
Nels wants to know when he can eat the paint.