Nickelodeon's Ultimate Halloween Haunted House was a live-action Halloween special that aired on Nickelodeon on October 16, 2016. It was the first of two Ultimate Halloween Haunted House events that Nickelodeon did between 2016 and 2017.
The special was hosted by Rico Rodriguez and featured special guest stars JoJo Siwa and WWE Superstar The Miz as they took part in a special haunted house event that saw the casts from Legendary Dudas, Henry Danger, and Game Shakers walk through a specially built haunted house that required each of them, split into teams and with guest star The Miz accompanying the Dudas cast, to find the five keys that would unlock the door out of the house.
- Rico Rodriguez (host)
- JoJo Siwa (guest star-actor)
- Mike "The Miz" Mizain
- Riele Downs
- Jace Norman
- Cree Cicchino
- Benjamin Flores Jr.
- Thomas Kuc
- Madisyn Shipman
- Theodore Barnes
- DeVion Harris
- Ricardo Hurtado (Party City accomplice)
- Jade Pettyjohn (Party City accomplice)
- Nefetari Spencer (Party City accomplice)
- All the decorations and props used in the haunted house were furnished by Party City.