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Official Site: Universal Studios

Halloween Horror Nights is an annual event that occurs at Universal Studios Florida, Universal Studios Hollywood and Universal Studios Singapore. Universal Studios remains operational during the day and transitions to Halloween Horror Nights at night. The event features haunted houses, "scare zones" and live entertainment, many of which utilize Universal's characters and other licenses.

Halloween Horror Nights began at Universal Studios Florida in 1991 under the title "Fright Nights" but were renamed "Halloween Horror Nights" in 1992 and advertised as the "Second Annual Halloween Horror Nights". Halloween Horror Nights began as a three night event but has since been extended to include up to 24 nights.

The first year the admission price was just $19.00 and the "scarectors" (scare actors) had to provide not only their own costume, but make up as well.

From 1991–2001, the event was held at Universal Studios Florida. Halloween Horror Nights moved to Universal's Islands of Adventure in 2002. In 2004, the resort experimented with a dual-park format, which connected and utilized parts of both parks. In 2006, the event made a return to Universal Studios Florida.

Jack The Clown has not been a contender in any CBUB matches.