- Ming the Merciless: I will destroy your earth in my own way!
- Dr. Alexis Zarkov: Why destroy the Earth? Why not conquer it?
- Ming the Merciless: [envisioning the suggestion] Why not? How did you enter my kingdom?
- Dr. Alexis Zarkov: On a rocket ship of my own design.
- Ming the Merciless: You are a remarkable man! I can use you.
- Ming the Merciless: [directing his guards] Take him to a laboratory. Give him everything he requires... except his freedom!
- Ming the Merciless: [watching Flash defeat the animal men] He fights well, the Earthman. He shall not escape the pit!
- Princess Aura: [terrified] No, Father, not that!
- Princess Aura: A bargain, Father! If he survives, he's mine!
- Ming the Merciless: [contemptuously] If...?
- Prince Thun [Chs. 2-9, 12-13]: Ming is merciless and all-powerful. He can only be taken by surprise.
- Flash Gordon: He'll be surprised alright.
- Ming the Merciless: [Obviously lusting after the nubile blonde Dale] Your eyes! Your hair! Your skin! I've never seen one like you before. You are beautiful!
- Flash Gordon: You keep your slimy hands off her.
- [first lines]
- Professor Hensley: We are doomed, Professor Gordon. That planet is rushing madly toward the Earth and no human power can stop it.
- Flash Gordon: [they're about to tale off in Zarkov's rocket ship] You sure this thing will work?
- Dr. Alexis Zarkov: I've experimented with models.
- Flash Gordon: Ah. They ever come back?
- Dr. Alexis Zarkov: They weren't supposed to.