Happy Haunts

Happy Haunts are the affiliation/name of ghosts in the Spirit Halloween; The Musical. The name is a reference to "999 Happy Haunts", a phrase commonly known by fans of Disney's "The Haunted Mansion" franchise, meaning 999 lost souls inhabit the Haunted Mansion. These include ghosts of real life people in the storyline who inhabit ghost animatronics.
Examples:
-Lost Her Way
-Towering Chained Ghost
-W. Raith
-Hung up Horace
-Stabbed Schramer/Schramer Johnson
-Marley's Ghost
-King Valence