Leprechauns

Leprechauns are mythological creatures of Irish folklore. Though they are generally regarded as benevolent and cheerful fellows, one leprechaun in particular, has been known to wreak havoc, gleefully slaughtering any who might covet his beloved pot of gold.

in film
The most promiment example of leprechauns in film is the unnamed leprechaun featured in the eponymous Leprechaun film series. Played by Warwick Davis, he was introduced in the initial film, Leprechaun in 1993 and appeared in five sequel projects titled, Leprechaun 2, Leprechaun 3, Leprechaun 4: In Space, Leprechaun in the Hood and lastly, Leprechaun: Back 2 tha Hood. The first film is the only installment in the series that was released theatrically in the United States. The subsequent films were all released in the direct-to-video market.