"Onion" series cartoon characters were created by Taiwanese cartoonist Ethan in 2006. There are four main characters in Onion. The hero is called onion treasure, the heroine is called onion sister, and there is a villain called ancient confused onion. Onion Bao always calls him an underdeveloped onion or an ancient confused onion.
The special role is the painter himself, called "Onion E". On Onion's official blog, there is a special column called "Onion E loves to wrangle". Ethan said that he painted onions for fun, and he painted them according to his own appearance.