Loki: I have been falling for 30 minutes!
Grandmaster: Revolution? How did this happen?
Topaz: Don't know. But the arena's mainframe for the Obedience Disks have been deactivated and the slaves have armed themselves.
Grandmaster: Ooh, ah, I don't like that word.
Topaz: Which? Mainframe?
Grandmaster: No. Why would I not like mainframe? No, the "S" word, the "S" word.
Topaz: Sorry, the prisoners with jobs have armed themselves.
Grandmaster: [Smiles] OK, that's better.
Thor: A creepy old man cut my hair off.
Grandmaster: I love when you come to visit, 142. You bring me the best stuff. Whenever we get to talking, Topaz, about Scrapper 142, what do I always say? "She is the..." and it starts with a "B."
Topaz: Trash.
Grandmaster: No, not trash. Were you waiting just to call her that? It doesn't start with a "B."
Topaz: Booze hag.
Thor: She's too powerful. I have no hammer.
Odin: What are you? Thor, god of hammers?
Thor: There was one time my brother transformed himself into a snake because he knows how much I like snakes, and so I picked the snake up to admire it, but then he turned back and went "aahh! It's me!" And then he stabbed me.
Odin: Even with two eyes, you only see half of the picture.
Bruce Banner: Last time we saw you, you were trying to kill everyone. What are you up to these days?
Loki: It varies from moment to moment.
Thor: How did you end up here?
Korg: Well, I tried to start a revolution, but didn't print enough pamphlets so hardly anyone turned up. Except for my mum and her boyfriend, who I hate. As punishment, I was forced to be in here and become a gladiator. Bit of a promotional disaster that one, but I'm actually organizing another revolution. I don't know if you'd be interested in something like that?
Answer: There's no mention in the movie that the weapons have been enchanted or improved so it is probably just the usual heroic movie convention of 'bottomless magazines'.