Jiminy Cricket is a character that appears in many of the Kingdom Hearts games, originally from the film "Pinocchio".Jiminy first makes his appearance in Disney Castle and becomes Sora, Donald, and Goofy's royal chronicler under the order of Queen Minnie. He explains to Goofy that he escaped right before his world was destroyed, and he was scattered from his friends. After they befriend Sora, they travel to many different worlds in search for the King, Riku, and Kairi. Some time after, he meets up with Pinocchio in Traverse Town, and tells him to stay put while he sets out to find Geppetto, his father.

When they head for Atlantica/Halloween Town, depending on which world the player chooses, they get swallowed by the giant whale Monstro and meet up with Pinocchio again, this time reunited with his father Geppetto. But then Pinocchio was lured away from his friends by Riku and they searched for him until a Parasite Cage Heartless captured Pinocchio and attempted to take his heart. He failed, but then Riku captured him and stole his heart in hopes to be able to replace Kairi's heart. Jiminy, Sora, Donald, and Goofy manage to restore Pinocchio's heart with the united power of their hearts. Then, they battle Parasite Cage again and defeat it once and for all, but then Monstro feels ill and spit them out and separates Jiminy away from Pinocchio. He finds out that Pinocchio and Geppetto are okay after they visit Traverse Town again and find them living there.
In Kingdom Hearts II, Jiminy only appears once.

A year after the events of Kingdom Hearts: Chain of Memories, Sora, Donald, Goofy, and Jiminy awake from their long, deep slumber in Twilight Town, and have no memories of what happened right after they closed Kingdom Hearts. Goofy asks Jiminy what his journal says, and Jiminy only finds a sentence: "Thank Naminé". Unable to know who she is anymore, Donald scoffs at him for his bad journal entry and Jiminy dismisses it by telling him to go and find out where they are. Jiminy doesn't reappear in the game after this event.