Kara helps Mon-El adapt to Earth. J'onn reacts to finding another Martian. Alex and Maggie investigate an underground alien fight club run by Roulette.
Tropes in this episode include:
- Achilles' Heel: Draaga has a bad knee from a fight on Warworld, which Mon-El tells Kara about after her first failed fight against him.
- Adaptational Wimp: Mon-El only has Super-Speed, Super-Toughness and Super-Strength (not on par with a Kryptonian) here and none of the more exotic powers like Heat Vision or Freeze Breath which Daxamites and Kryptonians share in the comics. It's possible he just needs more time to develop them, since he's barely been on the planet for a week.
- …And That Little Girl Was Me: Played with. M'gann M'orzz recounts that she survived the White Martians massacring the Green Martians because one of the White Martians refused to execute Green Martians and helped her escape. In the final shot of the episode, it's revealed she is that White Martian.
- Appeal to Flattery: Winn lampshades this by name when Mon-El tries to manipulate him into letting Mon-El out of the DEO headquarters. After learning how proud Winn is of making Supergirl's outfit, he offers to let Winn make him an outfit and even give him his heroic nickname.
- Breaking Speech: Roulette gives Kara one when she tries to shut her down.
- The Bus Came Back: The Alura hologram makes her return.
- …But He Sounds Handsome: When she calls the prince of Daxam a fratboy, Mon-El suspiciously says he had good moments.
- Does Not Know His Own Strength: Mon-El challenges a guy to an arm-wrestling match and accidentally dislocates his elbow from putting too much force into winning.
- Double-Meaning Title: More like triple meaning. Kara and Mon-El are survivors, as are J'onn and M'gann. Meanwhile, Roulette proclaims just one survivor for her fights.
- Dragon Lady: Roulette has both the appearance and bossiness as the manager of her alien fight club. She even has dragon tattoos. Although her dress and tattoos are identical to those of her (white) comic book counterpart.
- Exact Words: M'gann notes that she doesn't want to remember the horrors on Mars. She deliberately does not mention that the horrors she wants to forget are those perpetrated by her own people, not her oppressors.
- Fantastic Racism: Not as great, but Kara and Mon-El clearly still have issues letting go of the old hates between Krypton and Daxam.
- Fight Clubbing: Roulette's fight club.
- Fratbro: The Prince of Daxam had this reputation, according to Kara. And Mon-El doesn't exactly disagree.Kara: Ugh, they were the worst. And their son, the prince, he was rumored to be the worst of the worst. Frat boy of the universe.
Mon-El: Ah, he... he had his good moments, too. - Futuristic Pyramid: The Royal Palace of Daxam was a massive pyramid, which dwarfed the skyscrapers of the nearby city.
- Gilligan Cut: Winn takes Mon-El to the bar, but insists they'll only have one drink. Cut to Winn and Mon-El chugging beers and doing shots.
- Heroic Sacrifice: The Prince of Daxam tricked Mon-El (his best friend) into boarding the only ship on the planet so that he would survive the devastation.
- I Have This Friend: Inverted; Kara tells Lena "a friend of mine needs help," and despite Lena's skepticism, that's exactly what she means.
- Inhumanable Alien Rights: Roulette initially boasts that what she's doing is not illegal because the aliens she's forcing to fight don't have any rights.
- In a Single Bound: Mon-El can't fly, but can jump really high and far.
- I Take Offense to That Last One: Winn lamely tries to deny having been out drinking with Mon-El until J'onn mentions that the alien had a 5'2" sidekick. Winn immediately protests that he's 5'9".
- Jerkass Has a Point:
- As per usual, Snapper. He accurately says that while Kara may have a story, without sources it is baseless. When she gets her source (Supergirl's first person account), he lets her by.
- Roulette also has a point that even if her fight club shuts down, it won't stop the demand for gambling and death matches.
- Justice by Other Legal Means: Roulette can't be busted for her alien Fight Clubbing. Operating without a liquor license, on the other hand, is fair game. Subverted when she's able to get the charges dropped.
- Karma Houdini: Roulette walks away free at the end of the episode.
- Malaproper: Mon-El hasn't quite gotten slang down yet, thinking "awesome" is two words instead of one.
- Manipulative Bastard: Despite having some of them fight to the death, Roulette still manages to convince some of the aliens that she is the one providing for them.
- Multi-Character Title: As written in Double-Meaning Title above, the title refers to five characters, specifically two pairs of alien refugees and an evil human who survived being prosecuted due to connections.
- Mythology Gag:
- The banners seen briefly in the Royal Palace of Daxam resemble the flag of Krypton
from the comics. - Mon-El mentions having seen the gladiator matches on Warworld, with Draaga as a participant. Warworld is the name of the artificial planet where the Superman villain Mongul was introduced into DC Comics.
- Winn comments that Mon-El is at least able to leap over tall buildings In a Single Bound.
- This is not the first time where Roulette has organized an underground fight club.
- Mon-El breaking an opponent's arm during arm-wrestling. Happened with a Kryptonian in Superman II.
- The banners seen briefly in the Royal Palace of Daxam resemble the flag of Krypton
- One-Scene Wonder: Lena's secretary Jess appears for about 30 seconds but for some reason became really popular with many fans. She is often a major charceter in Lena based fan fiction despite this being her only appearance and never being mentioned onscreen again.
- Politically Incorrect Villain: Roulette doesn't even consider aliens real people.
- The Reveal: It turns out the M'gann is not another Green Martian, but a White Martian in disguise.
- Right for the Wrong Reasons: J'onn suspects M'gann is hiding something when she refuses to share a psychic link, and is proven right when he learns she was participating in Roulette's fight club. He buys her explanation that she is simply trying not to remember the horrors, though the real reason is that he would almost certainly discover she is not who she claims to be.
- Rousing Speech: Kara gives one to the aliens protecting Roulette, convincing them that there's a better option than letting someone like her exploit them.
- Scenery Gorn: Watch as the splendor of Daxam is laid to waste by the fragments of Krypton raining down upon it.
- Screw the Rules, I Have Connections!: Roulette is out of prison on the same night thanks to unspecified friends.
- Ship Tease:
- Kara gets this with Mon-El.
- Sparks continue to fly between Alex and Maggie. Alex seems more than a little disappointed that Maggie already has a girlfriend.
- Shout-Out:
- After Mon-El smashes one of Winn's training blocks, the latter says, "We're gonna need a bigger block."
- Lena compares Veronica Sinclair's tattoos to Lisbeth Salander.
- Slobs Versus Snobs: Daxam and Krypton, respectively. Mon-El and Kara lightly rib each other over this at the end.
- Small Role, Big Impact: If it hadn't been for the altruistic Prince of Daxam, Mon-El wouldn't have gotten into the ship. Meaning Mon-El would never have gotten to Earth and started Season 1's Cliffhanger.
- Stacy's Mom: Mon-El comments on how very attractive Alura is after seeing her hologram.
- Strong as They Need to Be: Draaga is strong and tough enough to fight powerful aliens like Kryptonians—but retreats when Alex has a handgun trained on him. Probably justified because, despite his own Super-Toughness, Draaga's not invulnerable (he still has a bad knee from a previous fight), so he's not sure if he's bulletproof.
- Suspiciously Specific Denial: Winn claims that he's not having a hangover after drinking out with Mon-El.
- Super-Toughness: Other than that, an instance of Super-Speed in the previous episode, and Super-Strength (which Winn says is nowhere near Supergirl's strength), Mon-El can't demonstrate any other Kryptonian super powers like Heat Vision, Super-Breath, or Flight. Kara plans to help him on that front by the end of the episode.
- Survivor's Guilt: J'onn figures that the only reason why M'gann would participate in the fight club is because of this trope, and he pleads with her not to punish herself anymore.
- Thou Shall Not Kill: M'gann participates in the fight club of her own free will but refuses to kill.
- We Hardly Knew Ye: In the beginning of the episode, the Prince of Daxam tricked Mon-El into boarding the last ship in order to save Mon-El from Daxam's catastrophe.
- Wham Shot: M'gann transforms into a White Martian.
