The green thing you see in our fanart Final Space Mooncake Happy Sticker is a planet-destroying spatial anomaly from the Final Space sci-fi cartoon. This character was created by the residual energy of an anti-matter bomb explosion that closed a portal to Final Space. He was first discovered near a supernova aboard the Scarlet Lance, which he soon fled from, and met Gary Goodspeed, who named Mooncake after a caterpillar he once had as a child.