Blood Knight: He freely admits that he loves to kill and has no moral qualms about it.
Changed My Mind, Kid: After apparently turning his back on the other survivors to get to an alien ship, he comes back and saves Isabelle's life.
Combat Pragmatist: Possibly the biggest in the Predator series. He has no qualms in creating more fire around him, blocking Mr. Black's thermal vision, or using the body of a teammate to trap Mr. Black.
The Chick: She's the most compassionate by quite a wide margin.
Morality Pet: For a long time Isabelle's faith in Royce is the only external sign the audience gets that he's not an irredeemable prick. He saves her life more than once, in the last case passing up a chance to use a Predator ship in order to come back and help her.
Small Girl, Big Gun: Though not of cartoonish proportions, it's a long-barreled, high-caliber sniper rifle, and she's rather petite.
Survivors Guilt: She is haunted by the loss of her spotter, who was killed in action shortly before she was kidnapped by the Predators.
A Death Row inmate responsible for killing 38 people. Stans may be small, but he moves like a cobra.
The Berserker: When we first see Stans, he's fighting Mombasa with a knife. Later, Stans gets stabby when pinned by one of the Tusker beasts. He jumps on a Predator and starts stabbing it in the back, and isn't the slightest bit afraid when it pulls out his spine. He'll fight anything and without an ounce of fear.
Even Evil Has Standards: His What the Hell, Hero? speech is full of this. He also tends to inspire this in others. This is prison etiquette - it's fine to fight each other, but the clique sticks together. Even different cliques should drop differences to team against the screws.
Faux Affably Evil: Sure, he's funny and personable, but he's always a second away from doing or saying something horrific.
For the Evulz: His reason for killing 38 people? (From a deleted scene)
Stans: Well my lawyer said I was crazy, but you want to know the real reason; why the fuck not?
Heroic Sacrifice: Already wounded, he throws himself at an Black Predator with a knife and slows it down enough for the others to escape.
Knife Nut: He complains about all the others getting guns when he only has a knife, but like the others he has been equipped with his most proficient weapon.
The Lancer: Stans may be crazy, but he's very much a team player, and would have probably taken over from Royce if Royce was taken down.
Serial Rapist: Heavily implied, though never demonstrated. And considering he's put on a deadly planet as a dangerous animal, he's probably a Serial Killer too.
Token Evil Teammate: There are quite a few people on this team that would probably qualify as evil or close enough to count, but he's probably the most evil and deranged. It's almost sad that it's half-masked by his hilarity, but you have to remember, the mercs killed for money. Stans killed people for the hell of it.
What the Hell, Hero?: Of all people, he joins Isabelle in directing a minor one at Royce after Mombassa's death.
Royce: I needed to know who we're up against. Now I do. Stans: A man is dead because of that. Royce: This morning you were ready to kill him. Stans: Well it ain't this goddamn morning, is it?
"I am ready to die. Are you?"
Played By: Mahershalalhashbaz Ali
An RUF member and a Sierra Leone Death Squad officer.
The Atoner: Maybe. He doesn't seem sadistic or particularly proud of his actions but he's killed before we learn more about his character.
"Can someone please just tell me, uh, what the fuck is going on here?"
Played By: Topher Grace
A doctor with no combat background.
Action Survivor: He's the only one who makes no active contribution to the firefights.
Combat Medic: It's the team's only explanation for why he is there at all.
Even Evil Has Standards: Sure Edwin is a serial killer, but even he seems to find Stans assertion that when they get home, Stans will do a ton of cocaine and rape multiple women more than a little horrific. Then again, he may have been pretending.
Kick the Dog: Even before The Reveal, he pulls a real dick move. When he's injured and trying to convince the others to help him, he goes all I Have a Family, and pulls out the photo Nicolai had shown him of Nicolai's kids. Nicolai died to save this guy.
Non-Action Guy: He mostly gets through combat by ducking behind Isabelle or Nikolai.
A veteran warrior who's survived in the game preserve for many seasons.
Badass: Sure, he may be focused on keeping a low profile rather than constantly fighting Predators, but he claims to have survived at least 7 hunting seasons on the world (or as his imaginary companion asserts, it's actually closer to 10). Either way, that's still pretty impressive. Even more so when you consider it's implied that the conflict he was plucked from was Vietnam. He also trekked along the Game Preserve Planet. That alone gets you points.
Death Seeker: Possibly. He seems resigned to his fate or possibly even glad when he sees the Predator who kills him.
Slowly Slipping Into Evil: He appears to be friendly at first, but in actuality he wants to kill other people dropped on the planet and get their supplies. This is likely because of all the shit he has since had gotten there and playing the game for himself, and killing those he comes across.
Possibly because among those who are deposited on the preserve are individuals like Edwin, who would kill and/or torture him for no reason at all if given the opportunity. After ten seasons of running into individuals like that, anyone would lose their ability to trust others.
Badass: His NECA action figure biography states he was the youngest ever Predator to kill a Xenomorph and complete the rite of passage.
Big Bad: Is the leader of the Black Predators, and according to his bio the Badass Teacher for Tracker and Falconer.
Blue and Orange Morality: The Black Predators clearly do not share the Classic Predators strict code of behavior. Their actions during the film would likely be frowned upon by their own culture. Robert Rodrigeuz states that the Black Predators are in fact dishonored outcasts among their own kind.
Cool Mask: As stated above his mask is adorned with the jawbone of a Xenomorph he killed during his rite of passage.
Combat Pragmatist: He accepts the Classic Predator's challenge to a fist-fight, but once Classic starts scoring some hits, Berserker resorts to using his plasma blaster.
Dramatic Unmask: The only one in the entire movie (at least from an actual Predator).
The Exile: According to Word of God. Rodriguez even suggests the possibility that the "Game Reserve" may be where they were banished to.
Obviously Evil: The eyes on his mask glow Hellish-Red, compared to the yellowish glow of all the other Predators. His red-stained dreadlocks don't help much either.
Unflinching Walk: When he detonates his own ship he just walks away casually without even looking back at the end results.
Tracker / Flusher
Played By: Carey Jones
Responsible for sending the hell-hounds after the humans, he also tracks them into Noland's refuge.
The Beastmaster: Tracker has trained a pack of spiny dog-like aliens to obey him.
Cool Mask: His mask has large tusks fixed to the lower part of it. The area around the left eye also bears the mark of a previous encounter, looking like a burn or acid may have caused it.
Worthy Opponent: Strongly implied with Hanzo. He immediately recognises his "offer" of a sword fight, decloaking to engage him on those terms. Predators generally only engage worthy foes in melee combat and as such Falconer is showing him a great deal of respect. It's also notable considering Black Predators by and large care little for the honor of Classic Predators.