Zeebo

Zeebo the Clown is the character who appeared in "The Tale of Laughing in the Dark" is referenced in several other stories, for example, in the episode "The Tale of the Whispering Walls", two children mention seeing him at a fun park, in the episode "The Tale of the Mystical Mirror", a girl says she will look like Zeebo if she wears too much lipstick, and in the episode, "The Tale of the Crimson Clown" in the boys room a video game called Zeebo's Big House can be seen on the desk with a picture of Zeebo on it as the title character. The video game was also mentioned in the episode "The Tale of Train Magic". Finally, in the episode "The Tale of the Night Shift", the teenage janitor is called Zeebo by his supervisor a few times at the beginning of the episode.