- Leprechaun: [pulling a pistol and imitating John Wayne] Hold it right there, pilgrim. I'm not gonna hurt ya. Naw, I'm not gonna hurt ya.
- [fires gun]
- Leprechaun: The hell I'm not!
- Pvt. Delores Costello: You don't think Kowalski's gettin' killed was my fault, do you?
- MSgt. Metal Head Hooker: What do you mean?
- Pvt. Delores Costello: Well, I mean, I'm the one who gave him the boner and all.
- MSgt. Metal Head Hooker: Forget about it. Kowalski would've wanted it that way. He was a marine. Come to think of it, when it's my time go, I hope I'm standing tall just like he was.
- Danny: [Seeing Kowalski's remains after Leprechaun came out of his genitalia] Damn. 'Gonna take more than penicillin to fix that shit.
- Staff Sergeant Brooks Malloy: [last lines; the Leprechaun's disembodied hand has just flipped off the survivors] Same to you, pal!
- Sticks: Way to go! Alright!
- [the survivors have a group hug]
- Sticks: God, I love the Marines.
- Harold: May I say what an honor is is to be working with such a great genius?
- Dr. Mittenhand: And may I say how much I loathe and despise toadies like you?
- Harold: Thank you. And may I say what an honor it is to be despised by such a magnificent mind?
- Dr. Mittenhand: Oh, shut up.
- Staff Sergeant Brooks Malloy: You heard the lady, Harold, move your ass.
- Harold: Hey, don't touch me unless you mean it, cowboy.
- Dr. Mittenhand: If you disobey my orders and refuse to carry them out. You will be tried for mutiny and I guarantee you,
- [shouts]
- Dr. Mittenhand: you will be shot! On the other hand, if you are successful in killing that creature. I will arrange a very generous bonus for each of you.
- MSgt. Metal Head Hooker: How much?
- Dr. Mittenhand: Say, one hundred times what you are being paid now.
- Sticks: I'm in.
- Leprechaun: The path to power is often soiled with innocent blood, and I will let nothing stop me from becoming king. I'll have power and glory, and a beautiful queen to share it with. Share... Now there's a word that lies crooked upon me. The very sound of it sends my teeth to grate and conjures up pictures of me gold being carted off to pay for feminine pleasures, leaving me with less than what I want, and what I want is everything. I'll wed her, bed her and bury her all in the same day. I wonder if her father will pay for the wedding AND the funeral.
- [Dolores is hanging from the catwalk]
- Leprechaun: Do ya like hangin' around, eh?
- [bashes one of her hands]
- Leprechaun: Well there's no future in that!
- Staff Sergeant Brooks Malloy: (After Leprechaun becomes a giant) What did you shoot him with, steroids?
- MSgt. Metal Head Hooker: One more thing, if I lose any more of my men, YOUR ASS IS GRASS!
- [pauses, realizing that Dr. Mittenhand's only organic parts are his head and right arm]
- MSgt. Metal Head Hooker: If... if you've even got an ass!
- Harold: I'm sorry. You have an appointment?
- MSgt. Metal Head Hooker: [yelling] Listen, you little pencil-neck geek, you get me the doctor now before I jerk out your teeth and shit down your throat!
- Harold: Thank you, I've already had my lunch.
- Harold: Dr. Mittenhand, you look... much taller in person.
- Dr. Mittenhand: Thank you, Harold, I'LL do the jokes.
- Dr. Mittenhand: I am like the Wizard of Oz, am I not? Running things from behind a curtain. Only this wizard IS NOT A FAKE!