Screenshot from the episode.
"Spooky" is a Halloween episode of the animated TV series Lilo & Stitch: The Series. It first aired in the United States on ABC on October 12, 2003.
Plot
It is Halloween. Lilo dresses up as a bloody gory character and Nani tries to get everything ready for when the trick-or-treaters arrive. But sadly, the house never gets any trick-or-treaters, a fact that Nani wants to change.
Meanwhile, Experiment #300, Spooky, is activated. Experiment #300 can transform into anyone's greatest fear, and makes his way through the town frightening people. When Lilo finds out that #300 made its way to Kaiaulu Hale's Halloween party, she tells Stitch to go after it.
External links
See the article on Spooky (episode) on Fandom's StitchDatabase wiki.