Kanta Mizuno (aka Desert Punk/Sunabozu)initial protagonist of the series.
- Anti-Hero: Oh yes, and then he becomes a full-on villain.
- Crazy-Prepared: Numerous examples of this.
- The Cynic: and HOW! and then he becomes a Straw Nihilist following his Face–Heel Turn.
- Face–Heel Turn: He quickly becomes an antagonist by the end of the anime, and in the middle of the manga
- Guile He-...Protagonist: Very much so.
- Hypocrite: Often criticizes Kosuna for dreaming of delusions, when he's no better.
- Jerkass: Yeah. Kanta is kind of an asshole.
- Jerk with a Heart of Jerk: One good illustration is that episodes 15 and 16 open with a flashback that at first seems like Kanta was a childhood friend of the Machine Gun Brothers and Natsuko, but the end of episode 16 shows the reality- young punk bullying the brothers into stealing for him and sexually harassing Natsuko.
- A second example. Later on, he sustains a head wound that causes him to be a much better person. Turns out hes just using it as an excuse to raise people's opinion of him and his social standing so he can get a good job eventually and relax. He's still exactly the same as he was before inside.
- Kick the Dog: Lots and lots of times.
- Lovable Sex Maniac: The lovable part is debatable though. His perversion is almost always Played for Laughs, but almost never puts him in a sympathetic light.
- Me's a Crowd: Punk's balloon doubles are a technology version of this
- Nominal Hero: Kanta has no real redeeming moral qualities and doesn't care about anything except money, boobs and staying alive. However, much of his work ends up being vaguely heroic because of the jobs he's assigned tend to be things like "Take out this gang terrorizing our town."
- Pintsized Powerhouse: He's a very short guy who is still capable of wielding a high-caliber shotgun with ease, and even without it he can pretty easily beat the crap out of most people.
- Red Baron: He is occasionally referred to as "the Demon of the Desert".
- Rogue Protagonist: He is the protagonist of the series or saga, and later on he becomes the antagonist.
- Shotguns Are Just Better: His weapon of choice. One gunsmith even lampshades it.
- The Sociopath: Most emphasized by his Face–Heel Turn.
- Stern Teacher: To Kosuna. He does punish her only when she fails, is not above a few words of praise when she does do good, and is generally in far better terms with her than with other people. Except Junko.
- Training from Hell: He isn't exactly nice to her, but nobody doubts she Tooka Level In Badass under him.
- The Unfettered: This is why he is so effective.
- Unsympathetic Comedy Protagonist: Bordering on Villain Protagonist quite often.
- Villain Protagonist: He becomes a villain later on in the series, especially after his Face–Heel Turn.
- Young Gun: Somewhat.
Voiced by: Tomoko Kotani (JP), Stephanie Young (EN)Kanta's Lust Object, a fact that she abuses to no end.
- Buxom Is Better: Pretty much every male character is enamored with Junko's breasts]]
- Face–Heel Turn: She becomes a villain later on in the series as with Kanta.
- Manipulative Bitch
- Ms. Fanservice: She invokes this to get other mercenieries to do her job for her.
- Nominal Hero: She's just as amoral as Kanta, only she's not considered a villain because her job is taking out people who tend to be worse. Much like Kanta, she ultimately pulls a Face–Heel Turn.
Taiko Koizumi (AKA Kosuna)
- Anti-Hero: Just like her master. She may be slightly less callous that him though.
- Badass Adorable: Somewhat, although less by personality than by size and age.
- Breakout Character: [From the 13th volume of the manga on, she (as an adult) is the protagonist.
- Bratty Half-Pint: Oh yes. Not above calling out her master on things or insulting people they beat up.
- Closer to Earth: Somewhat, due to not being lustful and greedy like her master.
- Corrupt the Cutie: Was notably more idealistic before being taken up as Kanta's apprentice.
- Generation Xerox: Becomes just as cunning and just as mean as Kanta. Then takes his place as the new Desert Punk.
- Genki Girl/Plucky Girl: Fits these, but is kind of a darker take on the idea since her goal is to be a badass bounty hunter, not a "hero of justice".
- Girl Friday: Toward Kanta, as well as her previous mentor.
- Hero-Worshipper: She acts this way to Natsuko so hard she comes off as having a crush on her. She sometimes acts this way to Kanta, when he can go five minutes without disgusting her.
- I Just Want to Be Badass: Which arguably succeeded.
- Small Girl, Big Gun: Defied. She keeps a rather small submachine gun and a grenade launcher because she hasn't the strength and size to get something bigger.
- Teen Genius: Sometimes shows remarkable intelligence.
- The Social Darwinist: Seems like hanging with Kanta did have some effect on this.
Voiced by: Norio Wakamoto (JP), Kenny Green (EN)
- Lovable Coward: His habit of running away in the middle of battle. Besides it being presented humorously, he tends to just as unexpectedly come back as The Cavalry and save the day.
- Nominal Hero: Although since he's usually against Kanta (until the last arc of the anime), he may be more of a Anti-Villain.
The Machine Gun Brothers (Fuyuo/Fuyo, Haruo/Haru, Akio)
Voiced by (Fuyuo): Jirou Saitou (JP), Jeremy Inman (EN)
(Akio): Otoya Kawano (JP), Justin Cook (EN)
- Jerk with a Heart of Gold: Unlike Kanta, they seem to be capable of genuine kindness, especially toward their sister.
- With Friends Like These...: They're considered friends with Kanta in the loosest sense possible. Kanta and the three of them can't even trust each other enough to come to a meeting unarmed.
Voiced by: Takahiro Imamura (JP), Robert McCollum (EN)
- Being Good Sucks: It the Great Kanto Desert, it mostly means being taken advantage of constantly.
- Expy: Stubbornly optimistic and heroic guy trying to bring peace and good to a desertic CrapsackWorld with his fists and CONTINUES despite the world seemingly trying to prove him wrong every time ?
- Foil: To Kanta; his intro episode is even called "Opposites Collide".
- Meaningful Name: Stryker strikes down entire crowds of enemies using a knowledge of Kenpo and sheer badassitude.
- Wide-Eyed Idealist: He is, however, aware his ideals probably aren't even right and upholds them mostly because Good Feels Good.
- We Help the Helpless: Reconstructed; Kosuna tells him treating people this way makes them dependent on you, which is a terrible way to be in this sort of Crapsack World. However, he decides it's still his responsibility to help people incapable of becoming strong or who never got a chance to do so.
- Childhood Friend Romance: Subverted in the anime: flashbacks seem to imply she resents Kanta because she can't get over a romance between the two when they were children, but it instead turns he actually just sexually harassed her and treated her horribly in general.
- The Dog Bites Back: In the manga she gets a good amount of revenge on Kanta for his mistreating her as a child: his introduction to La Résistance has Kanta humiliatingly dragged around (and given several embarrassing cavity searches) and when he tries to escape, she beats him up and dragged his ass back to the Oasis.
- Rebel Leader: Although technically not in charge of the rebellion, in practice she seems to have the most influence.