Leprechaun 4: In Space

Leprechaun 4: In Space is a 1996 American science fiction comedy horror film directed by Brian Trenchard-Smith and written by Dennis Pratt. It is the fourth entry in the Leprechaun franchise, coming after Leprechaun 3 (1995) and before Leprechaun in the Hood (2000). Warwick Davis plays the leprechaun, who menaces a Marine crew on a spaceship while trying to recover a princess he plans to marry.

In the year 2096, on a distant planet, the leprechaun woos an alien princess named Zarina as part of a scheme to become king of her world. They agree to marry, each secretly intending to kill the other after the wedding night to claim the other's benefits—a title for the leprechaun, and his gold and jewels for the princess. A squad of space marines arrives and kills the leprechaun for disrupting mining operations. After a marine named Lucky attempts to steal gold and is killed by the leprechaun's lightsaber, a grenade explosion finishes the leprechaun. Gloating, marine Kowalski urinates on the corpse; the leprechaun's spirit travels up the urine stream into Kowalski's penis. The marines return to their ship with the injured Zarina, planning to take her home for diplomatic relations. The ship's cyborg commander, Dr. Mittenhand, intends to use Zarina's regenerative DNA to rebuild his own mutilated body. On the ship, the leprechaun violently emerges from Kowalski's penis after he is aroused during sex. The marines hunt the leprechaun, who outsmarts and kills most of them in gruesome, absurd ways. While pursuing Zarina, the leprechaun injects Mittenhand with a mix of Zarina's DNA and blended scorpion and tarantula remains, then initiates the ship's self-destruct. Marine Sticks rushes to the bridge to stop it but is blocked by a password prompt. Mittenhand, now a monster called "Mittenspider," traps Sticks in a giant web. In the cargo bay, other survivors accidentally cause the leprechaun to grow giant after shooting him with an experimental growth ray. Biological officer Tina Reeves escapes to the bridge, frees Sticks by spraying Mittenhand with liquid nitrogen and shooting him. The only other surviving marine, Books, opens an airlock, sucking the giant leprechaun into space where he explodes. The trio deduces the password is "Wizard" (Mittenhand had compared himself to the Wizard of Oz), stops the self-destruct, and Books and Reeves kiss while Sticks sees the leprechaun