!Cobra
-> Voiced by: Creator/NachiNozawa (TV anime, [=OVAs=], Arcade game), Shigeru Matsuzaki (movie), Creator/YasuoYamada (PC Engine game), Creator/YusakuYara (Playstation game), Creator/NaoyaUchida (''Cobra the Animation'')
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* AnArmAndALeg: Once lost his left arm to the man who would become Crystal Boy.
* ArmCannon: Which shoots laser beams he can control with his mind.
* {{Badass}}: Is he ever!
* {{Biseinen}}: Before he changed his face.
* CartwrightCurse
* TheCasanova
* CheshireCatGrin
* CigarChomper: Rarely seen without a cigar. Some of them are gadgets in disguise.
* CoolGun
* FountainOfExpies
* HandsomeLech
* HealingFactor: Not to the degree of wounds healing before one's eyes, but his ability to recover from injuries that would otherwise be life-threatening in a matter of hours is one of the reasons why he's survived everything he's been through.
* JerkWithAHeartOfGold
* LovableRogue
* MrFanservice
* NoCelebritiesWereHarmed: He is modeled after French actor Jean-Paul Belmondo.
* ObfuscatingStupidity
* TheOtherDarrin: Cobra has been voiced by various voice actors throughout the years, the most notable being the late Creator/NachiNozawa in the original anime series, the {{OVA}}s, and the arcade game.
* RatedMForManly
* RocketPunch: A strategy he once used against Crystal Boy's defenses. The villain is quick to deflect the punch on their next encounters, however, so Cobra has to try other methods.
* ShowyInvincibleHero
* SmokingIsCool
* SpacePirate

!Lady Armaroid/[[spoiler:Princess Emeralda]]
-> Voiced by: Creator/YoshikoSakakibara (TV anime, [=OVAs=], Arcade game, ''Cobra the Animation''), Etsuko Ishikawa (PC Engine game), ToshikoFujita (Playstation game)

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* ActionGirl
* [[spoiler:BadassPrincess]]: [[spoiler:Before she received her Armaroid body.]]
* [[spoiler:{{Cyborg}}]]
* {{Fembot}}
* RidiculouslyHumanRobots: Justified since [[spoiler:[[{{Cyborg}} she wasn't always a robot]].]]
* RobotGirl

!Crystal Boy
-> Voiced by: Creator/KiyoshiKobayashi (TV anime, Arcade game), Goro Mutsumi (movie), Creator/TesshoGenda (PC Engine game), Creator/KojiTotani (Playstation game), Creator/HirokiTochi (''Cobra the Animation'')
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* ArchEnemy
* BadAss: In all incarnations. He can take Cobra on in single combat where the rest of the pirate guild (Even Hammerbolt Joe) can, at best, match Cobra in one aspect but not another. It's fitting that in all incarnations he's one of the more higher ranking members of the guild.
* BaldOfEvil
* BigBad: Along with Salamander.
* CulturedBadass
* GeniusBruiser: Of a sort. He's shown to be at least knowledgeable in combat; his movie incarnation made sure Cobra was put into a position where he HAD to stand and fight him, and he's smart enough in the text game to send ships at the Turtle so that Cobra doesn't have any backup on Neon Big Bird. He might have even beaten Cobra then and there, had he not underestimated Lady's badassery.
* HeyItsThatVoice: Yes, that is [[Anime/LupinIII Jigen]]'s [[Creator/KiyoshiKobayashi voice]] you're hearing.
* LightIsNotGood: He has a golden skeleton.
* NoSell: His crystal body allows him to redirect any beam weapon he's hit with so that it passes harmlessly through him. Even the Psychogun's. Cobra has gotten around this by making his lasers be reflected inside Crystal Boy until they cause damage to his body or overheat him.
* RidiculouslyHumanRobots: He likes wine for starters.
* SpacePirate
* SpellMyNameWithAnS: Is it "Crystal Boy" or "Crystal Bowie"?