A skymaid is a cloud-sky being, and is the "afterlife" or "next stage" of a mermaid. The heart of a mermaid has to be stolen, which K'nuckles does, after evading the mermen guarding her, deciding this is ok because "Mermaids are weird". Mermaids are then gradually killed when people use the wishes, called "mermaid tears" in their hearts (which is actually a bowl). These tears are little candies carried in a golden glass case shaped like a heart and the have the power to grant any wish, with no limitation it's assumed. Breathing syrup, floating on clouds, teleportation, knowledge, and changes to physical appearance are a few of the wishes granted to Flapjack and K'nuckles.