Cosmo the King of Johns, formerly Cosmo the Prince of Johns, also known as Prince John, is a character in the story "Snow Wanda and the Seven Fairies" from the episode, "Fairly Odd Fairy Tales". He is also the husband of Snow Wanda.
He looks like Cosmo Cosma, except instead of Cosmo Cosma's clothes, the prince wears, an aquamarine shirt with white cuffs and a ruff, black pants, a purple belt with a golden belt buckle, White socks, aquamarine shoes, a plunger as a hat.
Oddly, he has a crown, but doesn't have wings, making his species unknown.
He only appears at the end of "Snow Wanda and the Seven Fairies" in the episode, "Fairly Odd Fairy Tales".
He first appears when his carriage arrives. Tooth pushes him away, thinking that he is not "Prince John". He says that he is the prince. He corrects her by saying that he is "Cosmo the Prince of Johns". He also states that he sells high end toilets. Tooth is in disbelief of this fact. She says that he is supposed to be handsome and rich. He says that he is by making a toilet pun, The Seven Fairies laugh at this joke. Tooth says that she is not marrying Cosmo and she summons a hammer and says that she has a mirror to brake. Cosmo walks up to the unconscious Snow Wanda. He notices the caramel on her lip and kisses her. She wakes up. Cosmo asks her if she would like to be his "Queen of Latrines". She says that she doesn't know what that means, but anything would be better than hang out with the Seven Fairies. Cosmo and Snow Wanda ride away into the sunset.