* BeamMeUpScotty: Only one of the films takes place on St. Patrick's Day, not all of them.
* ExecutiveMeddling: What turned out to be a positive version. The original film was supposed to be a kid-friendly horror film. The producers felt it would work better as an adult themed horror film, and additional scenes were shot to up the gore quotient. And thus, a horror franchise was born...
* HeyItsThatGuy:
** Film/{{Willow}} as an evil leprechaun, who harasses [[Series/{{Friends}} Rachel]].
** [[{{Series/Newhart}} One of the Darryl's]] winds up with a [[CruelAndUnusualDeath lep playing pogo on his lung]].
* WhatCouldHaveBeen:
** There were plans to have the Bluewater Productions comic series crossover with the ''Film/{{Warlock}}'' comics made by the same company.
** [[WordOfSaintPaul Warwick Davis]] also claimed that a seventh film was going to be set in the WildWest, but the franchise is apparently (finally) dead.
** Davis has also mentioned a potential pirate-themed sequel in numerous interviews. Whether this was ever a concrete idea or mere wishful thinking isn't clear.
** The scene in the original film with the Leprechaun eating the BlandNameProduct version of Lucky Charms was filmed (with the approval of General Mills) with an actual box of Lucky Charms. The company later withdrew their permission as they felt the scene was disrespectful. Not only did they reshoot the scene, but they snuck in a blatant TakeThat at the company: [[spoiler: Alex's PreMortemOneLiner "Fuck you, Lucky Charms." For those wondering, the original line would have been TheTagline "Your luck just ran out."]]
** Recently, Brian Trenchard-Smith, the director of 3 and 4 revealed that years back he had pitched another film that would have placed the Leprechaun in the White House.
** Early drafts for ''Origins'' were actually a lot closer in tone with the original movies.