King Jellyjam was the main antagonist of the thirty-third Goosebumps book, The Horror at Camp Jellyjam.


Goosebumps (original series)

The Horror at Camp Jellyjam

King Jellyjam was formed when a careless camper left a cup of pudding or gelatin in a radiation-infested cavern (though it is unknown how he obtained the golden crown he wears). As Jellyjam grew, so did his powers. The purple, gelatinous blob was eventually able to hypnotize anyone, who came to Camp Jellyjam. But he was unable to leave the cavern he's in and hypnotism was his only power.

King Jellyjam also had a real foul stench (like a mixture of dead fish, rotting garbage, sour milk and burning rubber or boiling brussels sprouts) and sweated little black snails, instead of water. He often let out a humongous burp that shook the ground with its tremendous force. Since King Jellyjam's fingers were too fat and clumsy to pick up anything lying on the floor of his cavern, he was unable to clean himself. Instead, he hypnotized the counselors, including one named Buddy to bring forth the strongest, most physically fit of campers to do the dirty work for him by testing them out by winning six sports in a row that each of them competed in. Unfortunately for the campers who won the sports and earned the Camp Jellyjam coins they won for each sport, King Jellyjam seemed to get dirty, sweaty, and smelly just as quickly as anyone can clean him. Because of this, King Jellyjam had them scrub him and hose him day-in and day-out. And if anyone stopped cleaning him, even for a brief moment, King Jellyjam would gobble them up then and there, at least three kids sadly falling victim to this. A little girl named Alicia realized what was happening and tried to warn everyone else at the camp, but the counselors caught her and she was forced to wash the evil purple blob too.

This went on for quite a while, until one night, a girl named Wendy sneaked in and found out what was really going, unbeknownst to King Jellyjam. And the next morning, she returned with her brother, Elliot (whom she stopped winning a race) and yelled at the kids washing King Jellyjam to stop and lay flat on the floor. The kids did so, outraging King Jellyjam and he was about to eat Alicia but was unable to pick her up, due to his hands being too fat and clumsy to pick her and any of the other kids up. He then tried to wash himself, only to have the same result. King Jellyjam noticed Wendy and realized what had happened and was about to grab Wendy, but ended up suffocating in his own foul smell before he could do any harm to her.

Give Yourself Goosebumps

The Knight in Screaming Armor

King Jellyjam is seen in a dungeon at The Evil Knight's castle and his sweating snails gross the protagonist out.

Welcome to the Wicked Wax Museum

King Jellyjam is seen as an exhibit in the Wax Museum, along with a few other Goosebumps characters.

Little Comic Shop of Horrors

King Jellyjam is portrayed by the Comic Shop's owner, Milo as part of a test to see they can defeat him the same way the real King Jellyjam was. Milo, in King Jellyjam's form would eat the protagonist or the protagonist becomes King Jellyjam and becomes famous in a horror show.

General information

Physical appearance

King Jellyjam is a huge glob of purple, with enormous watery yellow eyes, a fat-lipped, two-tongued mouth and wore a gold crown on his head.


King Jellyjam was a terrible and disgusting slob of a monster. And even he couldn't stand his own foul smell, which is why he forced the strongest campers to wash him frequently. He had no tolerance for anyone trying to rest for even a second and wouldn't hesitate to devour the poor kid if they did so, his way of forcing everyone else to keep working. In spite of how scary he was, King Jellyjam was a very weak monster, due to being unable to move properly in his huge size, his foul stench and his fat clumsy fingers, which have been his biggest weaknesses.

List of appearances

Title Role Release date Series
The Horror at Camp Jellyjam Main antagonist July 1995 Goosebumps
The Knight in Screaming Armor Cameo September 1996 Give Yourself Goosebumps
Welcome to the Wicked Wax Museum Cameo December 1996 Give Yourself Goosebumps
Little Comic Shop of Horrors Portrayed May 1997 Give Yourself Goosebumps
Scary Summer - The Horror at Camp Jellyjam Main antagonist July 2007 Goosebumps Graphix


  • King Jellyjam bears some resemblance to the Star Wars character Jabba the Hutt as both are greedy, cruel huge slug like creatures except that King Jellyjam is purple.
    • Later in a Q&A, R. L. Stine said that King Jellyjam was inspired by Jabba the Hutt.
  • In Goosebumps: The Game, there's a strange Jelly substance in the mall's candy store. It's unknown what it is, but it could be possible that it's King Jellyjam, or pieces of him.
  • In a 2016 Reddit AMA, R.L. Stine claimed that King Jellyjam was the grossest character he's ever written.
  • In the Goosebumps: Collectibles line, there is an action figure of the camp counselor seen on the cover of the book incorrectly titled "King Jellyjam."