Disney's Happy Halloween Parade is the annual Halloween-themed procession that performs during Mickey's Halloween Party at Disneyland's Montréal Park. The parade features many different Halloween themed floats as well as Halloween style music. The music used in the parade is derived from Disneyland at Frightfully Fun Parade.
- The Nightmare Before Christmas Unit: Based on the 1993 Disney film. Zero leads the way, with the Mayor of Halloween Town announcing the arrival of Jack Skellington the Pumpkin King and Sally, as residents arrive to celebrate their favorite time of year.
- The Haunted Mansion Unit: Based on the park's attraction. Grim, grinning ghosts come out to socialize when it comes to “afterlife,” with swirling ballroom dancers, ominous gravediggers and a trio of hitchhiking ghosts.
- The Evil Queen/Dark Forest Unit: Based on the 1937 animated film Snow White and the Seven Dwarfs, The Evil Queen calls on mystical powers, summoning his Spooky Tree from the forest to loom large over his strange and twisted forest, During the show stop, four bungee-jumping spider rise into the air to perform tricks.
- Dr. Facilier Unit: Based on the 2009 animated film The Princess and the Frog, Dr. Facilier calls on mystical powers, summoning his Shadow Men from the bayou to loom large over his strange and twisted Voodoo parlor.
- Jafar Unit: Based on the 1992 animated film Aladdin,
- Willie the Giant Unit: Based on the 1947 animated film Mickey and the Beanstalk,
- Ursula Unit: Based on the 1989 animated film The Little Mermaids,
- Chernabog Unit: Based on the 1940 animated film Fantasia,
- Cruella De Vil Unit: Based on the 1961 animated film 101 Dalmatians,
- The Firebirds Unit: Based on the 1999 animated film Fantasia 2000,
- Finale Unit: The mischievous Disney Villains appear out of the darkness like Queen of Hearts, Captain Hook and Governor Ratcliffe, ready to stir up some trouble. A dark and dungeon-like lair takes over the parade route, bringing with it a wicked gathering of villainy such as Maleficent in her dragon form, Lady Tremaine, Anastasia Tremaine, Drizella Tremaine, Hades and Frollo.