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Tropes for the teams as a whole
- Added Alliterative Appeal: 5 out of 9 of the team names are this. Examples include:
- Babylon By Bus
- Bikini Bottom
- Crimson Chiefs
- Jaded Justice
- Ultraviolet Underground
- Hall of Heads
- Color-Coded for Your Convenience: Each team has a corresponding color (Ex: Crimson Chiefs are Red, Jaded Justice is Green, Cosmic Fire is Orange, etc). Teams (and their colors too) were originally based on gemstones, but when the teams were assigned they got to rename themselves.
- Morality Kitchen Sink: From the truly monstrous to the Laughably Evil to the odd Ideal Hero, pretty much every shade of morality possible and then some are represented across all teams.
Babylon By Bus
Team as a Whole
Stephen "Steppy" Morris - Stand: Depeche Mode
Ken Nard - Stand: Jump
- Decoy Protagonist: Finding the team's artifact, having the most straightforward "heroic" stand and matching personality, and being played by one of their most active members... However, he lost his first match, and was promptly killed off by his player character.
- The Bus Came Back: No pun intended, and he wasn't gone for very long at all, but he was still eliminated after his match with Grace Vincent, and brought back because there was a spot that needed filling and judges felt that they had misjudged in letting him lose.
- Back for the Dead: Was recruited to assist Destiny Showdown in the assassination match, and for his trouble wound up with a bullet to the chest and head courtesy of Senator Elliot.
- Eat the Rich
- Large Ham: Oh, absolutely.
- Surprisingly Sudden Death: One moment he was preparing to age an acorn and kill Elliot himself, the next his acorn practically exploded and there was a hole in his chest, the next there was a hole in his head.
Otraz Ivanov - Stand: Show You The Way
- Crouching Moron, Hidden Badass: Just as much if not moreso than Steppy. In the setup to the assassination match, a batshit insane plan cuts the opponents that need to be fought in the match in over half. There's a reason he made it all the way to the final match before his defeat.
- Hunting the Most Dangerous Game: His assassination match strategy sees him wrack up quite the killcount.
- I Just Want to Have Friends: His eventual revelation, finding fulfillment in the companions, friends, and rivals he'd made along the way.
- Let's Get Dangerous!: His bus plan in round 4.
- The Quiet One: A man of few words, and even less sense when he chooses to use them.
- Wild Man
Team as a Whole
- Making a Splash: A team largely full of water-based users and people who would work well with them.
MAKS_13 (Max) - Stand: Evolution
- And I Must Scream: Averted. He fully remembers every moment of having been a fused into Soul Train after being brought back to life, but honestly just thought the whole thing was really cool.
- Cool Train Soul Train
- Last Stand: As of the end of Round 2, he is the last member of his team remaining.
- Subverted, the revival of Captain Johnny Leever made this no longer the case.
- Double Subverted, thanks to the good Captain losing his Round 3 match, making Manny once again the last survivor.
- Mad Scientist
- One-Winged Angel: Allows himself to be devoured by his strongest creation, Soul Train, and fused into it, making it more powerful than ever and giving it the abilities of Weird Science. This is threat enough that the first match of Round 4 centers around it, and it takes four powerful stand users and the entire grand canyon to finally put him down for good.
- Token Evil Teammate: Twice now, his strategy has involved untold amounts of civilian casualties.
- Villain Protagonist: The longest-lasting and most significant member of Bikini Bottom, and one of the evillest characters in the tourney.
Donatello Blackwell - Stand: I Am
Johnny Leever - Stand: Drunken Sailor
Roger Waters - Stand: Funkytown
'Dr. Jekyll' - Stand: Go Robot
- Screw This, I'm Outta Here!: After losing to Geoff and Gregor in Round 2 Match 14 he ditched his team to go find and Join the Philosophers of the Hardy Diamond.
- Shout-Out - His abilities are a mix of the Vamps and Senator Armstrong's nanomachine abilities.
Team as a Whole
- Egocentric Team Naming 'Barons Army' was his previous mafias name
- Holy Hand Grenade His Stand produces literal Holy Hand Grenades, and their destructive capabilities vary depending on how many are created by it (the less bombs are made, the stronger each is)
- The Medic: Inverted WBK works similarly to Crazy Diamond.
- Meaningful Rename He wants to be the king so hard that he adapted the title 'baron' as his first name
- The Don Ruled his own mafia before running away from United Kingdoms after members of it died in an attempt to get his hands on a Stand Arrow
- The Leader Canonically went his way to recruit seven other Stand Users into his team through different states: California, Texas, New York etc.
- Sacrificial Lion: Ultimately, he was killed in battle in his third match.
Sarah 'Stratovarius' Williams - Stand: Rammstein
- Alternate Universe The original Sarah Williams was a psychopathic villain in a Dungeons and Dragons styled role play campaign, that was set during a post apocalyptic american continent. She ran an area where she would kill off and peel peoples skin, whom she deemed more than enough to be suitable for her paintings canvases. Additionally, despite said to be 24 years old and even looking like so, shes actually 78
- Animated Tattoo The previously mentioned Stand can move on solid surfaces, giving off the appearance of a 2D image
- Back for the Dead: In the first writeup of round 4, it reveals that she's been rather busy behind the scenes, trying to help her team while investigating villainous groups, and by the end of it she's been swallowed up by Soul Train.
- Bare Your Midriff
- Chain Pain Her Stand, Rammstein, can sap, store and discharge immense amount of heat into and from all of its four 5-metre long chains. Theyll also start glowing the more heat they have stored into them, turning from black towards pale white
- Chained by Fashion Her Stand appears as a tattoo on her skin, that can cover her body parts if she so wants to
- Character Name Alias Chose to use "Stratovarius" as an alternate identity ever since she was 26, so that she could live without getting recognized. Introduces herself with that same name to new people and reveals her real name only as a sign of immense trust between her and the other person/s
- Deceased Parents Are the Best Her father, who was a well-known firefighter, died alongside her art teacher mother in the Oakland firestorm of 1991
- Elemental Hai Colors: She has her hair dyed bright orange with bucket paint, but in actuality she is a platinum blonde. Goes out well with her ability to both flash fry an opponent and to drain their body heat away
- Expository Hairstyle Change After entering a relationship with Basilio Goltero Santos in the unofficial RP server and getting over with her past traumatic experience, Sarahs orange paint was washed away with a hot water, revealing her platinum blonde color from beneath and marking a permanent change in her appearance from that point onwards. You can read it from here
- Fate Worse than Death Canonically, in the tournament, Sarah would have been located, apprehended and dragged inside a Californian mental institute, where her pyromaniac tendencies were forcefully cured through a lobotomy, to a point where she has lost her Stand and set under surveillance of a doctor, her worst fear coming to a fruition. You can read it from here. Except it's not actually canon.
- In the Hood Combines this with a NBC Respirator to make herself look distinctively different and to hide her face from the public. She also sets herself on fire when she wants to, creating "cozy flames" on herself
- Guns N' Roses Sarahs grey croptop hoodie is a clothing merchandise piece. She is also a big fan of the band
- Meaningful Appearance
- Mundane Utility Uses the chains to multitask, such as grill meat, hold objects close so that they dont get in the way of her tattoo work but are still within a good reach, and perform everyday work
- Playing with Fire Fire- and heatproof skin. How did she achieve the resistance? By burning and exposing her own body for intensive heat ever since she was 16 years old for 10 years straight. And after achieving her fire retardant skin, she went and set a motel room on fire. She can still feel fire and heat and can even burn, but isn't physically harmed by the flames
- Trauma Button Mention something about doctors, psychologists, therapists, medicine or anyone with a lab coat and Sarah starts experiencing seizures. Can also be considered a Berserk Button, since she becomes angrier after briefly shaking, and more dangerous as a result
- Troubled Backstory Flashback
Mute/River Eisliedge - Stand: Atomic Bonsai
Kent Jerrod Moore - Stand: Crystal Waters
- Teleportation His stand, Crystal Waters can teleport things.
- Uncertain Doom: Last seen, according to Stratovarius, holding off a certain powerful NPC to buy her time to escape.
Ivan Abaduboi - Stand: Dust Breaker
- Too Dumb to Live - Attempted to use his stand to punch stand-lava. Though Broad Strokes are applied to all of the matches' canonicity, this is pretty widely considered to be where the match ended.
- Meaningful Rename After getting to US from Sweden and from her cynical childhood home, she changed her name to anew
- Nothing Is Scarier: Was grabbed by a particularly tall person, and... that's all we know. Next anybody heard, she was found in pieces in the burnt remains of the home she was in. Rory Raccoon ran away instead of sticking around to see what the hell happened. This will likely get explained later on when her killer is fought, though.
- Tomboyish Ponytail
Chloe Jay, Chloe Kay, and Chloe Elle - Stand: Hey Soul Sister
- Buried Alive: Inflicted this upon numerous prisoners in their second round.
- Creepy Child: Having little problem burying other children alive absolutely qualifies them for this if the rest of their behavior didn't. They're alluded to in the Soul Train match writeup as having stolen a bus' spark plugs as a "prank."
- Clones Are People, Too
- Felony Misdemeanor: A comically made-up crime, they "committed the grave crime of triple identity theft, with three little girls as her poor victims" as a Totem Pole Trench, and were tranquilized and sent to prison over it. The eventual punishment for these literal two year-olds next round? Hard labor.
- Mechanically Unusual Fighter: There's three of them who share a single stand.
- Totem Pole Trench: Got arrested by being one.
Team as a Whole
Crispin Freeman - Stand: Red Sun
- Black-and-White Insanity: Outright refused to work with any criminal, knowing he would kill them first.
- Bolivian Army Ending: Decides to spend his second chance at life going right into the heart of the Stormbringers' facilities, intent on taking all of them with him.
- Child Hater
- Police Brutality
- Rabid Cop: Good god.
- Team Killer: Killed his teammate Bond Jovi after losing their first match. This wound up getting him shot later on.
- He joins the Stormbringers specifically to do this to them in the ending.
Bond Jovi - Stand: Bad Name
Henry Jenkins - Stand: Heat Of The Night
- Broken Win/Loss Streak: Both the first player no-show to win his match and the first not to be killed off at the end of it. Rather, he goes blind after completing his mission successfully.
- Career-Ending Injury: Drops out of the race after being struck blind. He doesn't recover in the ending, but he has learned how to live more or less perfectly fine without his eyesight.
- Morality Pet: Destiny Showdown seems awfully fond of him.
Bas Haze - Stand: The Wanderer
Gina Halfway - Stand: Bad Name
- Shoulder Teammate: Her Stand, [Bad Name], often sits on her shoulder.
- Suspiciously Similar Substitute: To Bond Jovi. The judges felt that the character deserved a second chance, but Bond was killed in the lore. Luckily, that same lore established that Bad Name was a sentient, transferable Stand. Thus, Gina, who has the exact same stats and equipment as Bond, took his place, both on the Crimson Chiefs and as Bad Name's user.
Team as a Whole
- Adventure Duo: Jack and B.G. serve as this during their Matches in Rounds 1 & 2, with Jack as The Hero and B.G. as The Lancer respectively.
- Musical Assassin: About half the team is based off of this theme.
- Out of Focus: Self-inflicted, admittedly; they're the only team that never got around to giving themselves formal lore beyond the implication of being a band made up of stand users and people helping them out.
Simon "Jack" Rodgers - Stand: Catastrophic Event Specialists
Basilio Goltero Santos/B.G. - Stand: Radio Ga Ga
- Boring, but Practical: His usual strategy focuses on consistency over style.
- Child Hater: His JoJolity in round 2 wound up framing him as a hokey 80s villain sort of this. Notably, the highest JoJolity ranking his team has ever gotten. Having a chip on his shoulder for three toddlers supports this.
- FaceHeel Turn: From a sketchy but amicable guy to someone who would gladly take a pickaxe to civilians. Cemented by the implication that he goes on to join Bikini Bottom in the ending.
- Glowing Eyes: His Stand, manifesting as his neon blue eyes.
- It's Personal: Held the Chloes responsible for the defeat of Tyler Bonnie, and was glad for an opportunity to avenge his loss.
- Pop-Cultured Badass
- Smoking Is Not Cool: Played for laughs as part of his JoJolity in his second match; he plays the part of an 80s PSA Commercial villain by ineffectually tempting kids to smoke.
- The Cameo: After surviving his loss, he naturally appears in a flashback to the end of Lilah's boss fight in the Soul Train match, and then again having commandeered the MF WHALE in the underwater match, both in round 4.
- Villainous Friendship: Though they only knew one another a short time, he and Manny Elflad got on well and made a good team.
Lance - Stand: Devil's Trill
- Forced Sleep
- Identical Stranger: Downplayed with Scattle Perturbator. Thela told the crowd to go look for a tall, black-haired young man in a suit, and while Lance put on his Paper-Thin Disguise, the actual Miami Disco stand-user was a tall young man in a nice suit and animal mask.
- Drill Sergeant Nasty: Inverted Devil's Trill shouts things out like one.
- Magic Music: Summoning Devil's Trill requires him to be playing an instrument.
- Musical Assassin: Yeah.
- Paper-Thin Disguise: Tears up his military-looking uniform slightly and puts on a bandanna to avoid people looking for someone of his description. Justifiable enough that it works decently, though, since he was avoiding a bunch of drunks, the person who knew what he looked like couldn't make out distinct features, and, canonically to lore, another tall guy in a suit happened to be lurking around suspiciously. Comically enough, the same guys sent to kick his ass complimented his look.
- Slain in Their Sleep: His stand lends itself well to this.
John "Jaco" Pastorius - Stand: Birdland
Michael Mclane - Stand: Communication Breakdown
Felix Arrowsmith - Stand: Set In Stone
- Retired Badass: A former hitman with a lot of stand-fighting stories under his belt, he's just with the Good Vibrations to do odd jobs... Which happens to land him right in the middle of more stand battles.
- Screw This, I'm Out of Here!: After losing the first match of the tourney, in lore-canon, he simply... took the boat he was tasked with removing from the water during the match, and went off on his own, continuing his retirement.
Team as a Whole
- Beware the Nice Ones: Russ and Jules are both not to be trifled with lightly, both as a team and individuals. Few teams can boast a victory against the Philosophers of the Hardy Diamond.
- Face: The closest the team has to a villainous character is sort of a Jerkass.
- Shoot the Shaggy Dog: Grace and Henry's attempts to look into what happened to their boss, not to mention the reasons he went off the radar in the first place, all ended badly.
Tsao Xu - Stand: High Mountain and Running River
Jules Langlais - Stand: Mirror Ball
- Nice Guy: He's just a nice, caring dude on an overall good team.
Akiyoshi Yamamoto - Stand: Psycho Killer
- Name's the Same - Psycho Killer was also the name of a stand in the first tournament.
Blue Monday - Stand: Secret Agent Man
- Almost Dead Guy: At the end of Round 2's first match.
- He Knows Too Much: After his player dropped between rounds, in-character Blue Monday followed suit, apparently investigating something... And then being killed for it.
- Voice with an Internet Connection: In a shout-out to the Metal Gear series, during Grace Vincent's first match. He gets cut off just before he can give any serious advice to Grace for the ensuing fight, though.
Henry Walshmann - Stand: Bread
- Back for the Dead: Lost in round 1 and was allowed a revival, and genuinely but was defeated in a far more fatal manner in the first match of the second round.
- Edible Bludgeon - His stand is weaponized bread.
- Pungeon Master: Makes croissantstant bread and baked good puns in the writeup.
- Took a Level in Badass: Though he still lost, his second fight showed a much more dangerous battle than his first, making full usage of his stand's various forms. He barely lost by a few points in the categories where he did.
Miras Atrium - Stand: Max Power
Philosophers of the Hardy Diamond
Team as a Whole
- All-Loving Hero
- Cool Train: Finally met his match in a rematch with Mute aboard the SOUL TRAIN, a monstrous train made by Manny Elflad during his match with Lilah Dawn that subsequently went out of control. It's made of people and featured tributes to many other fallen players.
- Gentleman and a Scholar: Mason is affable, consistently well-liked, and arguably the world's leading expert on Stands.
- Giant Handsof Doom\Floating Limbs: Dark Side of the Moon has 8-12 of them! They're normally human-sized, though.
- Glowing Eyes: Dark Side of the Moon is a dark sphere with blue glowing eyes surrounded by smoke and lots of disembodied floating hands. Most of the time it's cute, though if he's serious it becomes Glowing Eyes of Doom.
- Good Parents: Competes with DJ (the cheetah from T2) for the title of Best Dad.
- The Heart: Arguably the nicest member of the entire tournament. He was willing to forgive Destiny Showdown mere days after almost being killed by him.
- Iconic Outfit: That labcoat.
- Inverted Trope: Dark Side of the Moon's ability is to inflict this onto other stands, inverting their powers if it's able to grab them with one of its hands. Neither Mason nor his opponent know for sure what'll happen, though Mason is very good at guessing.
- Labcoat of Science and Medicine: He never takes it off. Ever.
- Legacy Character: Also participated in Tournament 2.
- Mad Scientist: Downplayed, as he is on the side of the good guys, but it's there. Always wears a labcoat, constant slightly-disheveled appearance, occasionally poses like Gendo Ikari, occasional bouts of maniacal laughter, and is obsessed with creating a scientific theory to explain the nature of stands.
- Mad Scientist's Beautiful Daughter: He has a daughter, Ava Mason, who features prominently in the unofficial RP server and in a couple of in-character votes. She's smart, good-looking, extremely headstrong, and has a Humongous Mecha as her stand.
- Mage Killer: Dark Side of the Moon's Ability Inversion makes it very well suited for combatting stands with powerful abilities. Likewise, it is more vulnerable against stands with high physical base stats, since it can't affect those. However, there is also the possibility that a stand's inversion might make it more powerful, or open up more attack options.
- Multi-Armed and Dangerous: Dark Side of The Moon has numerous floating hands which can regenerate when destroyed.
- Mundane Utility: A big proponent of using stands in this way. He uses Dark Side of the Moon's hands to hold things, sort papers, cook food, and even accentuate his own speech sometimes.
- Passing the Torch: Retired from the tournament after losing to Mute aboard SOUL TRAIN. Mute was able to prove herself by besting him, and went on to become one of the Soul Rebels, taking on the Hall of Heads and finally defeating Destiny Showdown in a rematch.
- Smart People Wear Glasses: Well, he does, and he is.
- Squishy Wizard: Dark Side of the Moon boasts above-average Power, Speed, and Precision, and an extremely powerful ability (usually), but has subpar durability. In particular, its hands are made out of little more than smoke, and disintegrate extremely easily, though they do not transfer damage back to Mason.
- Sufficiently Analyzed Magic: Mason's ultimate goal is to create a scientific theory that can explain stands. He's a top researcher at the Speedwagon Foundation and is well on his way with a pretty solid theory already in the works. He's obsessed with it, to the point where he's learned to identify many stand abilities on sight, and will often delay a killing blow just to see a new enemy stand in action.
- Sympathy for the Devil: Despite Destiny Showdown killing his friend, torturing a child in front of him, and nearly kidnapping him, Mason is still reluctant at the thought of killing him, primarily because Showdown has parents back home whom he legitimately loves.
- Higher Understanding Through Drugs: Gained her Stand after creating and taking a drug developed from the venom of a Stand-using toad.
- Kill Sat: Her Stand power.
- New-Age Retro Hippie
- Plot-Triggering Death: Her death turned the PhD from a loose group of morally variable Science Heroes into a unified front bent on discovering the cause of and avenging her demise.
- Posthumous Character: Nearly all of the lore involving her relationship to the team, as well as her impact on the plot, occurred after her death.
- Present Absence: Before being killed by Destiny Showdown, she was a minor side character. Now avenging her is the driving motivation behind the PhD's actions.
- Sacrificial Lamb: Due to not showing up, she was turned into this in post-match lore, becoming the first heroic tournament character to die.
- Team Mom: Made into this by the player's teammates team retroactively.
- We Hardly Knew Ye: Didn't show up to her only match, and was only on discord at two points.
Marco F. Caine - Stand: Gas Gas Gas
- Token Evil Teammate: Along with Anna and Marco.
- Playing with Fire: Typically invoked outside of matches, in circumstances such as setting his team's home base on fire upon departure, or having burned his parents alive in his backstory.
- Mad Doctor: From a stat in specifically and sadistically wounding his enemies in battle, to removing his own eye in an attempt to replace it with part of someone else's stand (against their will), his degree in medical biology goes a long way in evil-doing.
- Weaponized Teleportation: His stand and its ability.
- Turncoat: In round five, he was revealed as a traitor and appeared as a boss, working with Destiny Showdown against the player team. The thing is, his defection to the Hall of Heads was nowhere near a new development. He had been a Double Agent since his first match.
- Team Killer: Not only was Marco F. Caine's death his fault entirely, he worked with the Hall of Heads, who had killed another member of his team already, in an effort to kill off all the other players, more or less. In the end, for the purposes of achieving the power to right all of his past wrongdoings. Ironically.
- Karmic Death: Shot for attempting to attack one of the players after being defeated... despite having potentially been spared if he just stayed still. A chance that he hadn't given anyone to that point, and most likely didn't register with him for that very reason.
- Not Quite Dead: Despite being declared dead in match results, and confirmed by his player that Damon had died, they also implied that he may see the light of day again for Tournament 4, through some personally-written lore revival.
Anna Rose - Stand: Toto
- Academic Athlete: Her first two matches were in basketball and hockey, and she ended up winning both against stiff competition.
- With her Round 3 match being doubles tennis, she seems set to continue the trend.
- Though admittedly her success was the result of...
- Not Cheating Unless You Get Caught: Integral to both of her sports strategies.
- Token Evil Teammate: Along with Damon and Marco.
- Academic Athlete: While his matches are less sporty than Anna's, Geoff remains the most physically fit member of the PHDs and has skill points in Cricket, earning him the title of "Jock on Nerd Team". Plus, in-lore, he plays cricket for Oxford University.
- In his Round 3 match, he's partnered with Anna in doubles tennis.
- Cultured Badass: A fan of William Shakespeare, and prone to throwing in a Shakespeare quote from time to time.
- Exploited Immunity: Since Geoff's Stand makes him immune to fire-based damage, he is sometimes set on fire when allied with Marco.
- Fragile Speedster: Not Geoff himself, but his Stand, Heat of the Moment, which has a Speed ranking of A and a Durability ranking of E.
- Glass Cannon: Not Geoff himself, but his Stand, Heat of the Moment, which has a Power ranking of A and a Durability ranking of E. Geoff himself has a 5 in his Endurance stat partially to make up for this.
- The Hero: Fits the mold the best of any PHD member, lasts longer than any of them, and even wins the entire tourney, choosing in the process to bring everybody Back from the Dead.
- Heroic Resolve: Geoff will not give up in a fight until he physically cannot move anymore... Or if he gets bored and doesn't feel justified continuing the fight. The point is, when he gets knocked down, he will continue to get back up until he no longer can.
- Hot-Blooded: Geoff is passionate and likes to solve his problems with violence. Furthermore, one of his unique stats is "Patience: 1". This character trait factors into his Stand, Heat of the Moment, which has the ability to heat things up very quickly.
- An Ice Person: Heat of the Moment can absorb the heat from objects as well as expel it, giving it ice powers as well as heat powers. This has been used primarily to cool liquids the Stand has shaped for its own purpose, such as the rocket sleds in both of Geoff's first two matches.
- Indy Ploy: He tends to charge into situations without much forethought, and needs his ability to think on his feet in order for this not to get himself killed.
- Kill It with Fire: Geoff's finishing moves often involve heating his Stand's hands to a point where the air and anything else they touch catches fire.
- Kill It with Ice: Sometimes Geoff will absorb the heat from an opponent's body as a finishing move.
- The Law of Diminishing Defensive Effort: Heat of the Moment is a Fragile Speedster while Geoff is Made of Iron. Naturally he'll just try and tank hits that would easily take down his Stand.
- Leeroy Jenkins: Geoff is confident, powerful, and oh so impatient. This has led him to rush into dangerous situations without considering the risk to himself or his allies. However, he is also adept at thinking on his feet, which can mitigate the negative effects of his "Patience: 1".
- Made of Iron: Geoff's Endurance stat is 5, which officially corresponds to "anime bullshit."
- Man on Fire: In Round 1 Match 3, his finishing play with Marco Caine included Geoff being set on fire.
- Personality Powers: Heat of the Moment has the ability to alter the specific heat capacity of objects, as well as to expel or absorb large amounts of heat with its hands. Fitting for someone as Hot-Blooded as Geoff.
- Playing with Fire: Heat of the Moment's ability is not fire manipulation directly, but heating an object up to its autoignition temperature will cause the object to catch fire. He's done this with the air to throw flaming punches as well.
- Rapid-Fire Fisticuffs: Heat of the Moment can perform a Stand rush on par with Star Platinum's own "ORA ORA ORA."
- Required Secondary Powers: Along with manipulating the heat of objects, Heat of the Moment (along with Geoff) is completely immune to heat-based damage.
- Unskilled, but Strong: Compared to the rest of his teammates, Geoff's Stand has some of the most raw power, but is simpler, and Geoff himself is certainly less skilled or pragmatic than his allies.
Gregor Yuvecksky - Stand: Pump It
- The Alcoholic\Vodka Drunkenski: Subverted. While Gregor does almost always have a flask on him and takes swigs regularly, his alcohol tolerance is so ridiculously high it's almost impossible to get him drunk.
- Badass Teacher: 70-year-old Computer Science Professor who barely escaped from Soviet Russia with his life, and is more than capable of smacking an unruly student back into line.
- Combat Pragmatist: He espouses the virtue of fighting smart. In fact, in Round 1 Match 16, he was given the JoJolity to fight with honor, which he famously failed.
- Cool Old Guy: 70 years old and can hold his own in a fight, a drinking contest, or a slew of Avengers: Infinity War trailer quotes.
- Finger Firearms: Pump It has nozzles on the fingertips of its hands, which can shoot out high-pressure bullets or streams of gel.
- Glass Cannon: Despite its incredible Power and Potential, Pump It has sub-par durability. The tentacle arms are particularly easy to snap or sever.
- Good Scars, Evil Scars: Has an X-shaped scar on his face, which he received while attempting to escape Soviet Russia and shortly before the first time he manifested Pump It.
- Had to Be Sharp: You have to, in order to escape from Soviet Russia while the Kremlin is actively hunting you down.
- Mentor Archetype: To the rest of the PhDs, being the most senior member.
- Mother Russia Makes You Strong: Sort of, though it was mostly escaping from Mother Russia.
- Multi-Armed and Dangerous: Pump It can sprout an unlimited amount of A-Power, gel-shooting arm-tentacles, given enough setup time.
- Mundane Utility: Pump It is a supercomputer of a stand, can sprout an infinite number of A-Power, gel-shooting tentacles...and can also play Tetris and Doom.
- Old Master: Gregor is 70, and a tough old man.
- Power Perversion Potential: Defied. Despite all the teasing he gets from some of the younger members of PhD.
Daniel Cali - Stand: Boombadoom
Team as a Whole
- Beware the Silly Ones: Their fights and character interactions often have very comical elements, but even when they've lost they often put up extremely solid fights, even if they lost first in the end.
- Legion of Doom: The team was explicitly set up as this, with the Tournament having so many good-aligned characters that the Judges decided to group up most of the "bad guys" into one villainous team. Ironically enough, none of them are nearly as bad as certain others in the tourney.
- Shoo Out the Clowns: They're Laughably Evil at times and like to play this up in their plans, and suffer many losses early in the tournament. They're down to Judas Saxon alone by the finale of round 2, and the first team reduced to one person.
- Similarly, in Round 3, Judas's loss rendered Ultraviolet Underground the first team completely knocked out of the tourney, while the drama in the plot of the tourney continued to escalate.
Stu Steel - Stand: Boogie
- Straight Man: No pun intended, he was consistently portrayed as playing this to Fabian's antics.
Jim Ledbetter - Stand: Don't Pull Your Love
- Cargo Ship\I Call It "Vera": Happily in love with his childhood sweetheart/bolt-action hunting rifle, "Shelly".
- Full-Frontal Assault: In Round 2 Match 10, as he was fighting in a steam bath.
- Why Don't You Just Shoot Him?: Averted. Having an effective way to just fill his opponent with lead is what his fighting style ultimately amounts to, and few can deny its effectiveness.
Fabian Albert Gibson - Stand: My Bone is Strong
- Expy: Of "The Manwhore," a Sexual Lobster character.
- Lethal Joke Character: Thought that he was just some writeoff? Tell that to Jaco and Michael. Even losing in round 2, he put up a hell of a fight according to the judges, and would have won if it wasn't for such a dramatic popularity advantage.
- Macho Camp: Very much.
- People Puppets: For a single second at a time.
- Punny Name: The judges don't like to type out the whole thing for this reason.
Seido "Ricochet" Shuto - Stand: Trick Shot
"Grand Mage" Judas Saxon - Stand: Hammer Of The North
- Fusion Dance: Was combined with Russ Teneo into Rudas Texan in round 2's final match.
- Gayngster : Won a match by seducing his opponent into marriage... despite it being a man. This was fully embraced and his sexuality is a recurring theme, also helping to add to his Freudian Excuse as he no doubt suffered some discrimination in the past.
- Hell-Bent for Leather : Has a very distinctive leather and denim outfit, appearing in much fanart.
- Last Stand: The last member of Amethyst team left by the point of his match in round 2 gives him the dubious honor of being the representative of the first team to be down to its last member.
- In Round 3 Match 5, he was defeated by Gregor Yuvecksky of the PHDs, the final member of UU to be RETIRED.
- Villainous Widow's Peak : And very sexy it is too.
- Fanboy: Of Donald Trump, of all things.
Hall of Heads
Team as a Whole
- Hero Killer: A decent few of them have become this in lore, with noteworthy victims being Eleanor, Mary Ann, Grace Vincent, and Blue Monday.
- Lilah Dawn notably eliminated two players in her boss match.
- Legion of Doom: A straighter example than Amethyst team. Every key player on the team is a boss fight powerful enough to require two players teaming up against them to win.
- Let's You and Him Fight: Their modus operandi unless one of them happens to need to face someone directly; they arrange situations for various teams to square off against each other and gradually pick each other off to make the stragglers that much less trouble to take care of.
- No Name Given - This team's name, gemstone, and true motivations have yet to be officially revealed. They were unofficially named the Pyrite Ponies by one of the players in the tournament as a placeholder, in reference to Flori Dada's golden Stand and the fact that Tiny Dancer is a horse.
- As of Round 3 Match 8, their true name has been revealed: The Hall of Heads.
- Teeth-Clenched Teamwork: Not all of them get along well at all. Destiny in particular has had issues with both Roel and Flori. By the end of Round 3, no longer seems to be the case, with Flori and Roel dead and Randall Elliot having betrayed the team.
- Asshole Victim: Nobody really misses him after he's gone, and in fact a few homeless people turn his mansion into a more legitimate shelter in his absence.
- Bitch in Sheep's Clothing: Runs a homeless commune out of his mansion... and uses it as a front for his organ harvesting and human trafficking operations, on top of partially funding the villain team.
- Evil Duo: Implied to enter a business partnership with Leslie after the ending.
- Riches to Rags: His karmic streak continues even when he's brought back in the ending. He's lost everything, wound up becoming a homeless drifter himself, with only a bag of belongings by his side... And all that's left to do is start building up again.
- Starter Villain: The first few lore pieces across round 1 built him up sporadically, and then he was the first boss opponent faced. While he put up a decent fight, ultimately he wasn't that much trouble.
- The Team Benefactor: At least one for the villain team. His human trafficking operation provides quite a lot of money and cheap, well-conditioned manpower for their facilities and research projects.
- Anti-Villain: More of a villain due to who he works for than his actual motivations or actions.
- Black Knight: What his stand takes the form of.
- Berserk Button: Animal abuse, as revealed in his backstory.
- Blue-and-Orange Morality: His second appearance in involved killing a random girl just so she wouldn't interrupt Steppy and Dragomir's battle, viewing it as dishonorable to halt the battle.
- Honor Before Reason\Willfully Weak: Does not use the full extent of his abilities due to feeling it would be dishonorable. He's also the only boss so far not fought in an environment that gives him an absolute benefit.
- Intellectual Animal: A horse.
- Light 'em Up: His stand allows him to control reflected light.
- Noble Demon: Fitting of a knight.
- Starter Villain: Was originally intended to be the first boss, though scheduling caused him to switch places with Flori Dada. His difficulty was not increased to compensate for the change, though he did manage to have higher marks than expected.
- Took a Level in Badass: As of the ending, he has an animal army, apparently called the Knights of Cydonia, featuring the likes of Leslie's chimeras, The Monkees, Bremen, and Flori Dada.
- Badass Preacher
- Mad Bomber
- Minion Master
- Red Oni, Blue Oni: The Red to Destiny's Blue, out of the major round 2 bosses, and portrayed as such in the end of round 1 writeup.
- Wake-Up Call Boss: Though not as much as his immediate successor, he was still a hard sell to defeat. He had enough raw power that even Steppy and Monster, two of the biggest powerhouses to make it into round 2, had to fight smart just to break even on quality.
Destiny Showdown - Stand: Lemon Demon
- Abusive Parents: They beat politeness into him. Rather than resenting them for it, though, he internalized it, and it made him the Serial Killer that he is.
- Affably Evil: Say what you like about him, but he's certainly polite. In the (decanonized) lore in which he defeats Mason and Mute, he even genuinely offers her a chance to drop out entirely, being allowed to fully recover and live a normal life... But promising she wouldn't survive if she refused it.
- Co-Dragons: While all of the Hall of Heads qualify as this to their leader, he and Lilah are the most recurring and competent assassins and observers, as well as seeming to be legitimately respected by the man himself.
- Combat Tentacles: Lemon Demon has them, and puts them to surprising usage.
- Disproportionate Retribution: A Serial Killer who targets rude people. Some of his worse victims, though, dip from this into Pay Evil unto Evil.
- Drugs Are Bad: Killed Eleanor out of disdain for her drug peddling.
- Even Bad Men Love Their Mamas: Even if they don't deserve it, he cares about his parents a lot.
- Kill It with Water\Poisonous Person
- Morality Pet: Unconditionally nice to Henry Jenkins the one time they happened to meet, and appreciative of Damon Aurel's following his instructions when they did.
- Mundane Utility: In his day to day life, he uses the ability to turn water into any liquid... To run a bar where all drinks are free.
- Red Oni, Blue Oni: The Blue to Roel's red, out of the major Round 2 bosses, and portrayed as such in the end of Round 1 writeup.
- Sadistic Choice: In the decanonized bad ending, offers one up to Mute: drop out of the hunt entirely in exchange for being allowed to recover fully and live her life, betraying her principles in the process, or keep trying to fight him and die.
- Serial Killer: Targeting rude people or those he generally thinks are bad for society, as well as acting as a general hitman for the villain team. This has ranged from Charlie, the homeless man found dead in the first match of the tourney, to Eleanor Rigby, to Anita Ferry, all across the first round alone.
- Torture Technician: In his match, his JoJolity was to torture his opponents but leave them alive, which the judge panel gave him extremely high marks for.
- Tranquil Fury: Very easy to set off, but outwardly he only seems slightly agitated at worst.
- Wake-Up Call Boss: Unlike all bosses in either tourney, who were defeated with little to moderate difficulty, Destiny was strong enough to force a draw.
- Wouldn't Hurt a Child: VERY very downplayed; he would still very much unhesitatingly attack and even torture young Mute, and would have been willing to finish her off in the end, but as the decanonized loss lore reveals, after defeating her, he would have made a legitimate offer to stop there, get her serious medical attention, and never bother her again if she dropped out of the hunt to live a normal life.
Missy Elliot - Stand: Barbie Girl
- Ambiguous Gender: Despite the name, Barbie Girl is described as a mixture of both of Missy's parents, and referred to in gender neutral terms as a result.
- Baleful Polymorph: Her stands ability turns people into toys.
- Children Are Innocent: Missy has no idea what she's really doing, and when she does, stops immediately.
- HeelFace Turn: Because Missy refuses to kill for her family anymore, Barbie Girl will not refuse that wish of hers.
- Heel Realization: After the players escaped her, realized that it wasn't okay to smash them up like toys.
- Hopeless Boss Fight: Unlike other Boss matches, defeating her wasn't the objective. Attacking her would have instantly killed either player.
Lilah Dawn - Stand: 9 to 5
- Affably Evil: Only really a villain because she's killed people on behalf of the Hall of Heads.
- A Lighter Shade of Gray: She's killed people and won't lie about that, but compared to the likes of Manny Elflad, she's a straightforward hero.
- Co-Dragons: While all of the Hall of Heads qualify as this to their leader, she and Destiny are the most recurring and competent assassins and observers, as well as seeming to be legitimately respected by the man himself.
- Enemy Mine: Willing to work completely openly with Mute, Mason, and Stratovarius to take down Soul Train.
- Hero Killer: Well, "hero," but she defeated Manny and Crowbar.
- Unexpected Character: Not her, but her special item: The Overload, from Tourney 2!
Senator Randall Elliot/Mr. E - Stand: Deep Purple
- Big Bad Wannabe/Disc-One Final Boss: Though a very legitimate threat to his enemies and asset to his allies, he's not the leader of the Hall of Heads and has to rely on others in fights. Betraying his companions only paints a target on his back, not only from Destiny, but from others he's made himself an enemy of as well.
- That said, the whole point of the assassination match is that, should he be allowed to continue earning the alliance of criminal groups, producing his weapons, and using his stand, he could very well be the most dangerous man alive to stand users and bystanders alike. If Buffalo and Russ hadn't interfered, he and his men would've simply killed Destiny and Thela and made a very important ally out of the head of a drug cartel in St. Petersburg, Florida, snowballing from there. It's even arguable that he's the true Big Bad starting in the epilogue.
- Corrupt Politician: With illegal mercenary/terrorist groups in his pocket, frequently taking money under the table, and even working with organized crime rings, not to mention his dealings with the Hall of Heads.
- Doing In the Wizard: Deliberately defied; it's left unclear whether the 'Flow 24' particles he discovered are what causes stands, or created by development of a stand.
- Even Evil Has Loved Ones: Does legitimately love and care about his wife and daughter, not that it stops him from using the latter's own stand ability to torture and murder people.
- Evil Genius: His stand can imbue objects with stand abilities.
- Hypocrite: Claims to care deeply about his family, but he and his wife still use their very young daughter as, effectively, a torturer and assassin.
- Last Stand: Round 4, Match 5, where the players are both tasked with assassinating the man. He knows his time is coming and doesn't intend to go down without a fight, even killing Thela Hun Ginjeet as a result.
- Non-Action Big Bad: While Deep Purple and the Stormbringers he command are the cause of an unending supply of headaches for the players, the only way his stand can really be used directly for combat is using its considerable durability to body-block.
- Sixth Ranger Traitor: Apparently the most recent member to join the Hall of Heads (until Strawberry), somewhere early in round 1. After his daughter's Heel Realization, he betrays the team to act as a faction of his own.
- Sufficiently Analyzed Magic: In practice, his stand allows him to thoroughly research other stand abilities and imbue their effects in other things.
- The Team Benefactor: Besides Flori Dada, the main source of funding for the Hall of Heads was his operations.
- Villain with Good Publicity: Absolutely beloved by the people of Florida despite the horrible things he's done.
- Unholy Matrimony: His wife, Brooke, is a willing partner in his schemes.
Strawberry Roan - Stand: Bury Me Not on the Lone Prairie
- Anti-Villain: Even moreso than Lilah, he's the easiest Hall of Heads member to outright call good. The closest he's ever come to compromising on his principles was helping Lilah in her fight by frightening away as many civilians as possible before Manny could get to them, leaving all the actual fighting to her, and considering what he'd done in a hospital of all places the round prior...
- The Atoner: Deeply regrets the things he's done in the past.
- Call to Agriculture: After quitting his old job, went to live on a small farm with T.
- Daddy Had a Good Reason for Abandoning You: Downplayed and justified. He ultimately distances himself from his adopted son when he focuses more on the Hall of Heads, even pointedly refusing to let him help out with his work. The Hall is, after all, a dangerous group of people in their own right, and T, at 20 years old, is a grown man despite being slightly sheltered.
- FaceHeel Turn/Neutral No Longer: Though starting as a radio announcer offering advice for the cast and claiming no interest in pursuing the artifacts himself, he ultimately threw his hat in with the Hall of Heads after much resistance to the idea.
- My God, What Have I Done?: Killing a man who he'd learned was being forced to fight because his very young son was being held hostage was what inspired him to give up his life as an Arizona Ranger.
- One-Man Army: Able to pull entire arsenals out of the lining of his coat and more than capable of using them; collectively, he has about a 10 in guns. His backstory specifically mentions him winning a gunfight in a warehouse 13 to 1.
- Retired Badass: A former Arizona Ranger and Vigilante Man who wound up giving that life up long ago, but is still in absolutely top form.
- Thou Shalt Not Kill: He takes this rather seriously, even in the rare moments where he does stand in direct opposition to the opponents. He managed to shoot Mason nonfatally in a writeup, even!
- Treacherous Quest Giver: Eventually became this.
- Voice with an Internet Connection: The 'voice' of Stand Proud, so to speak. When he chooses to focus more on his work with the Hall of Heads, T takes over the position instead for Round 4, being far more direct and open with his instructions to players.
- You Monster!: After tasking Manny with saving innocent people gets even more killed twice, he has this opinion of him.
- Big Bad: The leader of the Hall of Heads, respected and feared alike by his underlings.
- Face Framed in Shadow: In proud tradition as a JoJo villain!
- Lovecraftian Superpower: Skin Manipulation
- Jigsaw Puzzle Plot: His backstory, personality, motivations, and even hints of his ability are divided among later lore rewards and writeups, both in his own appearances and how other characters discuss him.
- Buccaneer Broadcaster: A radio station that overrides all others and can only be heard by Stand Users? Sounds about like it.
- Heroic Neutral: The voice of Stand Proud and its broadcaster, 'T,' says he has no real interest in the hunt itself, but still provides hints from time to time for the players and offers to give them further tips or support in exchange for doing some good.
- Those Two Guys: There's two of them, even if we only hear one.
- The Voice: As a radio announcer. His partner, 'T,' doesn't even get that until round 4, when the pair splits apart.
- Attention Deficit... Ooh, Shiny!: Its stand power causes people to want to capture it, dropping everything else they were doing. This ability is later partially used as the basis for the artificial stand 'Bubberducky.'
- Team Pet: Became one for Babylon By Bus after its capture. This was occasionally referenced for awhile until it came back in a big way in round 4's writeups, having become fond enough of the team to cooperate with Buffalo and use its ability to crash two enemy trucks into each other.
Lyanna de Replay - Stand Unknown
- Asshole Victim: Though she seemed to be an ordinary amusement park worker, she was lying in wait for whoever out of Dragomir and Steppy won their match to finish them off.
- The Unfought: Killed by Tiny Dancer before she could even reveal her abilities.
- Western Terrorists: Technically the first of a group these to appear, though already killed by the time she had done so, so not the first properly encountered.
Joe Armstrong - Stand: 21 Guns
Anita Ferry - Stand: Ring of Fire
- Ax-Crazy: Absolutely loves raining fire down on things.
- Expy: Visually described as something similar to a female Guy Fieri, but personalitywise couldn't be further off.
- It's Personal: Implied to have some past history with Destiny Showdown that prompted her to target his hometown.
- Western Terrorists: The second member encountered from a group of these.
Scattle Peturbator - Stand: Miami Disco
- Identical Stranger: Downplayed due to the vague description, but he was mistaken for Lance and ultimately killed for it.
- Interface Screw: Invokes this upon others by causing people to only see colored silhouettes.
- Shout-Out: To Hotline Miami
- Western Terrorists: The third member encountered from a group of these.
Ryder Wyland - Stand: Hammer to Fall
- Bunny-Ears Lawyer: Obsessed with his privacy to the point of wearing his getup out in public, and doesn't seem to have a problem interrupting his boss in the bathroom of all places for a report, but he is highly competent nonetheless.
- The Dragon: To Senator Elliot, being the leader of the Stormbringers.
- Expy: Has had his role in the plot described as 'Risotto Nero-esque,' having effects on the plot long before his proper debut, never properly fighting the heroes, as well as getting to face off against the Big Bad alone after all of his allies were killed, and has a stand ability similar to Weather Report's, so a twofer here.
- Shout-Out: Par for the course, but in particular, several facets of his design and characterization were inspired by Brian May-penned Queen songs, as well as his iconic hairstyle and degree in astrophysics.
- Western Terrorists: The leader of a group of these called the Stormbringers.
- The Worf Effect: Ultimately his intended role, being established as a serious threat, only for ＧＩＡＮＴＳ to easily kill him in a bizarre fashion.
- You Shall Not Pass!: In the assassination match, he tasks himself with holding off ＧＩＡＮＴＳ and destroying his car so Elliot has a chance to kill Destiny and escape... But then the players came along anyway.
- Karmic Death: A bit crueler than she deserved, but a stand based on freefalling people and a user killed in an elevator crash.
- Troll: Swears she wasn't really going to force the fighters to fight to the death, she just wanted to see how they reacted to being told to.
Rudas Texan - Stand: Mímisbrunnr
- Blood Knight: Judas was already a bit of one, and now here come Russ' thrill-seeking tendencies.
- Expy: A rightfully Smug Super fusion-created hero and Blood Knight, with a name that's a combination of both of theirs favoring one half of the fusion? Vegito, is that you?
- Fusion Dance: Between Russ Teneo and Judas Saxon.
- How Do I Shot Web?: Could barely even move or control his stand at first, but after realizing what had happened, and that he was fused, he instinctively knew exactly how it worked.
- Mechanically Unusual Fighter: He's a fusion, for one thing, not to mention outright breaking the stat pool over his knee.
- Smug Super: Described as such.
Oscar Del Goorin - Stand: Room to Breathe
- Badass in a Nice Suit: A really powerful stand, and since Kangol and Borsalino have identically impressive stats, presumably he is absolutely ripped under it all.
- Big Good: He tries. He fails.
- Hero of Another Story: He'd been up to quite a bit offscreen even before his two halves' introductions, which was partially why he split himself in the first place. He also somehow knew enough about Leslie to round up an entire team of his own against them, quickly dissolved as it was.
- Literal Split Personality: Can do this to anybody, including himself. When he had to do this for some reason before round 1 match 22, he needed outside assistance to get back together, though normally he can split them himself. He can also rend apart Aunt Leslie's creations... Which is precisely why he was quickly killed by one of them.
- Sacrificial Lion: Plenty of NPCs had bitten the dust before, but he'd received a bit of buildup between lore rewards and match writeups as a supporting player and benefactor for various teams after being returned to normal, especially Cosmic Fire. Invoked, as he was specifically created to eventually be slain by Aunt Leslie.
- Story-Breaker Power/The World's Expert on Getting Killed: Room to Breathe is a practically perfect counter to My First Car, and he lasts exactly long enough in the R 2 M 15 writeup to prove this, express his confidence in his ability to challenge Leslie, and then be killed.
- Theme Naming: He and his components are all named after men's headwear companies. He is also named after Oscar De La Renta.
Yoko Takizawa - Stand: Lily of the Valley
- Attention Deficit... Ooh, Shiny!: Her weakness, according to her stats, is a very short attention span, despite being a bright, strong girl.
- Chekhov's Gunman: That young Japanese woman doing stunts in a round 1 match turns out to secretly be a powerful stand user in round 2, and in round 3 is further revealed to have been a Speedwagon Foundation agent.
- Fighting Clown: Her style, according to her stats in round 2's hospital match.
- Killed Offscreen: At some point after her round 3 appearance, her car was fished out of a river, stained with blood, after she was last seen promising to investigate Deep Purple more.
- Broken Pedestal: Corman Vino, villain of R 3 M 10's writeup, was a friend and mentor of his as a fellow marine biologist before he sold out, and is also a member of Senator Elliot's inner circle.
- Edible Theme Naming: His name is italian for "eel"
- Nice Guy: A stand user who genuinely just wants to do good and help out where he can, with no real interest in the artifact hunt. When his inverted stand unintentionally enrages Baron and Gina, he doesn't blame the latter for all the blood spilled because of his mistake. Because of this, though, he really has no experience in fighting and makes mistakes nobody who actually did would have.
- Only Sane Man: He lacks the eccentricities the people he hires ends up having. He also tries to break up fights before they start, though that tends to backfire.
- Uncertain Doom: In his third appearance, he encountered the leader of the Stormbringers alone below the decks of his boat, seeming to recognize him. Moments later, the others grew more agitated, followed by their being attacked and knocked out by the same man. If he's dead, he's presumably back anyway in the ending.
Aunt Leslie - Stand: My First Car
- Arc Villain: Of the final two matches of round 2; an entire party is gathered up to confront him, and soon enough he's forced four of them to fight one another, killed one, and fused the remaining two together before they went on to challenge him themselves.
- The Beastmaster: Of course.
- All Your Powers Combined/Fusion Dance: Has the ability to force this onto any living thing... Including himself.
- Evil Duo: Implied to form one with Flori Dada after the ending, both having been stripped of their resources.
- Lone Wolf Boss: No affiliation to the boss team, but he's still fought as one.
- Mechanically Unusual Fighter: An inversion of the usual boss formula, of two players against a powerful enemy: four reasonably threatening opponents against a single powerful player.
- One-Winged Angel: Mr. Finish Line, a combination of all of his chimeras and himself.
- Wolfpack Boss: A ringmaster and his creations.
- Apple of Discord: Bubberducky is actually an integrated Stand with the ability to cause any two Stand users who see him to fight brutally over him.
- Companion Cube: A literal rubber duck.
- Morality Pet: Downplayed with regard to Marco Caine. While Bubberducky does incite Marco to violence against all other Stand users who also see him, the precious duck also brings out Marco's hidden protective nurturing side.
- Team Pet: Became one for the Philosophers of the Hardy Diamond after Marco acquired him. To avoid the dangers to teamwork caused by the Stand ability, Bubberducky is kept in a box and only one PhD (usually Marco) can watch over him at a time.