- Batman: Batman to Justice League. The Joker just left city limits
- Superman: You were hot on his tail. How did he get away?
- Batman: While in pursuit, there was an abduction of the extra-terrestrial kind.
- Wonder Woman: Gotham's most notorious criminal may be an alien science experiment right now? Justice served.
- [first lines]
- Joker: The clock is ticking!
- [Joker's truck careens to a stop at the end of a pier with two wheels hanging over the side]
- Joker: Parking is such a pain in this city.
- [Batman in his Batmobile roar onto the pier]
- Joker: You're too late, Batman. The gut buster blows at midnight.
- [a tractor beam pulls Joker upwards towards an alien spacecraft]
- Joker: Good thing I didn't wear a skirt.
- Joker: Many thanks for aiding in my escape, kind alien brute... sir.
- Mongul: I am Mongul of Warworld
- Joker: A vibrant cultural epicenter worth visiting, I'm sure, but if you wouldn't mind dropping me off at the abandoned amusement park, three miles south of Arkham...
- [Mongul grabs Joker and tosses him into an auditorium surrounded by blood-thirsty aliens]
- Mongul: I am Emperor Mongul!
- Joker: So, what can I do for you Your Heinousness?
- [while Wonder Woman and Superman confront Mongul and his horde of space aliens, Joker sneaks away and tries to steal Wonder Woman's spacecraft]
- Joker: The first rule of comedy - always leave them wanting more. Now, however do you operate this?
- [Wonder Woman's magic lasso suddenly loops around Joker]
- Wonder Woman: All buckled in? Good!
- [last lines]
- Batman: What did you do with the gas?
- Superman: I gave it to someone who needed a good laugh.
- [cut to Mongul's ship where Joker's gas is causing the aliens to laugh controllably]
- Mongul: I hate... Superman. I really hate Superman. I really, really...
- [Mongul lapses into another fit of laughter]
- [Wonder Woman confronts a horde of Mongul's space aliens]
- Wonder Woman: Can we skip to the part where I thrash you all?
- [the aliens growl and surge forward]
- Wonder Woman: I'm gonna take that as a "no".