Time by time, characters from the actual Yu-gi-oh series make appearances in the story by interacting with the characters and at times the plot. Most of these appearances are usually limited to a brief scene, a one-time dueling cameo or sometimes even play a part in the actual story.
Tropes shared for all of them (Please only put tropes that apply to them in the Shadowchaser series)
- Ascended Extra: Some of them have larger roles than the ones they had in their respective series.
- The Cameo: Duh.
And of course any tropes that they have from their respective series.
Yusei Fudo
- The Apprentice: He was this to Shichiro at one time, when Shichiro pursued an unauthorized project believing that a Sensitive person could become Aware. It ended in failure, and Shichiro believed that his meddling was a big part of what caused the infighting that led to the break-up of Team Satisfaction.
Crow Hogan
- Battle in the Center of the Mind: His meeting with Ember is a strange version of this. Both of them are dreaming at the time (courtesy of a psychic ability used by DaPen and neither is clear on who is in the other's dream. Crow suggests the duel because he can't think of anything better to do before one of them wakes up.
Jeager
- The Commissioner Gordon: For the Neo Domino Shadowchasers, although Shichiro clearly dislikes working with him.
- I Just Want to Be Normal: He's an Aware, but makes it clear that he couldn't care less about anything Shadow-related.
Divine
- Evil Versus Evil: Divine and Louis DaPen despise each other, but Divine has more of a reason too; apparently, DaPen is both a more powerful psychic than he is, and a better duelist than he is using a Psychic Deck.
- Gut Feeling: He's an unofficial ally of the Neo Domino Shadowchasers to start, but both Shichiro and Gears clearly do not trust him. When his true colors are revealed halfway through the story (at the time Carly becomes a Dark Signer) they realize they were right, and condemn his actions.
- Predecessor Villain: He sort of plays this role in Rave's origin story in Twice-Told Tales.
- He and the Arcadia Movement seem to have some sort of past with Marie and the X-Men as implied in Dragon Lords
Takasu
- Brainwashed: Courtesy of Edumnd, and it seems to have something to do with the new copy of Iron Chain Dragon that he gives him. Fortunately, it's temporary.
- Villain Decay: More plot-wise, he has certainly suffered from this after Godwin fired him. When first seen, he is down on this luck, and no longer gets respect from anyone. As Shiricho puts it, he likely never did in the first place, saying that the only reason anyone was ever afraid of him was because he was Godwin's tool. (And oddly enough, Takasu does not seem to have a problem with that, saying that "If I was a tool, call me Black and Decker!") Even Edmund, who uses him as a pawn, sees him as little more than expendable.
Mukuro Enjo
- Brainwashed: Similar to the deal with Takasu. Again, it's temporary.
- Mirror Match: He was Ember's opponent during her Rivalry of Warlords test. Though her strategy is completely different from his.
Professor Frank
- Freudian Trio: The general theme of his deck, using monsters based on the Id, Superego, and Ego, an expanded version of the one in the anime.
- Psycho Psychologist: Clearly he has changed little since his confrontation with Ruka. He does show some compentance in the science, as shown in this exchange between him and Shichiro:Shichiro: You're either very brave, or very foolhardy, Frank. I really don't know what to make of you… What are you, a psychiatrist, or a nut?Frank: Why can't I be both? Maybe you could call me a psychiatry nut, or a nutty psychiatrist. In the grand scheme of things, Shichiro, not everything is always viewed in terms of black and white. The great Sigmund Freud knew that well… That's why he suggested that there were three aspects that defined the human mind rather than two: one good, one evil, and one that was a mediator between the two.Shichiro: You realize that most psychoanalysts these days regard Freud's theories as obsolete?Frank: True, but like I said before, wrong theories are often as beneficial as correct ones. When a theory is debunked, good theorists form new ones. Freud is to be commended for getting the ball rolling, so to speak.
- Too Dumb to Live: As Shichiro points out, any human who would knowingly and willingly work for an illithid is pretty dumb. Frank made it even worse by calling DaPen a "tentacled mutant with weird powers and an eating disorder". He probably should have had sense enough to know that DaPen was listening.
Shira
- Punch-Clock Villain: As Jinx finds out, his sinister and evil reputation among duelists is a ruse. He does it for money and nothing else.
- Sealed Evil in a Can: Uses an Exodia Deck.
- The Unfought: Averted. While he never got to duel in the actual series, he does so here.
Jill de Lancebeaux
- Black Knight: His Mordred the Black Knight card which contains a curse that Edmund implanted that would trigger upon the Golden Castle of Stromberg's destruction.
- Failure Hero: Even more so than in the anime, and he has no-one but himself to blame this time. He uses the Golden Castle of Stromberg Field Spell, despite the fact that Gears tells him it's an illegal card. The end of the duel leaves him less heroic than he ever was.
- Ye Olde Butcherede Englishe: An interesting case since he only speaks like this in the English version of 5Ds but does so in the series (which use the original versions of the anime for reference)
Trueman
- Ambiguous Ending: At the end of Power Primordial, he is seen living as an ordinary civillian but wonders if the world has seen the last of the Messenger of Darkness. Not even he knows what will happen to him in the future.
- And it appears he's back now, as one antagonist in "Shadowchasers: Backwater".
- Continuity Cameo: Unlike most characters in this folder, his role in Power Primordial is much bigger than a cameo. However, he makes brief appearances in both "The Link of Destinies" and "Twice Told Tales", where it is explained where he got the Spell version of "Call of the Haunted" and where the aboleth got the Sacred Beasts.
- The Dragon: To the aboleth
- Killed Off for Real: Is dispatched by the aboleth about midway through Power Primordial for his several failures. This was actually a subversion. It was a ruse set up by the two of them in order to get the Neo Domino Shadowchasers off Trueman's trail.
- Pragmatic Villainy: When he uses the Destruction Insurance card, which his employer got from Kodo Kinomiya, he is quick to point out the biggest reason why Kinomiya lost his duel with Aki:Trueman: I mean really, his opponent was a woman with uncontrollable psychic powers, and he spends the whole duel insulting her?
- Wild Card: Changes his deck in each of his encounters with the Neo Domino Shadowchasers.
Panik/Nitemare
- Ax-Crazy: Exaggerated as Nitemare
- Archenemy: To Karl in Torment.
- Bad Liar: Emphasized by Hape when he tries to tell Hape that he isn't afraid of Lareth. (Of course, Yugi could probably have told you that too...)
- Crippling Overspecialization: Like the Allies of Justice, the Hellgears have some problems when fighting non-Water opponents. Unlike them however, they have a another tactic that doesn't involve Water opponents at all (See Zerg Rush below)
- Evil Counterpart: His Hellgear monsters, who are transformed versions of the Allies of Justice.
- Jerkass: Even other members of the Cult of Tharizdun seem to despise him. Hape tells him to his face that he hates him.
- The Legions of Hell: Used an Archfiend deck during his first duel with Karl in Torment.
- Made of Iron: As Nitemare
- Mechanical Lifeforms: His Hellgear monsters.
- Meaningful Name: His Hellgear monsters. The anti-Water ones are named after powerful devils, while the ones that focus on swarming are named after diabolic infantry.
- Never Found the Body: He is last seen plummeting from a flying dirigible, although Dante truly doubts that the fall could have killed him.
- Painful Transformation: Jalie makes him go through one after he loses in his first duel to Dante, turning him to Nitemare in the process.
- Playing with Fire: His Hellgear monsters, which specialize in battling Water monsters. (An Ironic Echo of his original career as a dueling assassin in the anime, where he used flamethrowers built into the arena to intimidate opponents.)
- Took a Level in Badass: Even when he first appears, he seems to have abandoned the style he used in the anime entirely, where he hid in the dark behind defenses, and now plays very offensively. In Ascension, he takes another level, his transformation turning him into a nightmarish opponent who is anything but the coward he was once accused of being.
- Zerg Rush: During his second duel with Dante, he focuces on low-leveled Hellgears that focus on swarming the field by summoning extra copies of themselves or fellow Hellgears.
Giese Hunt
- Fight Clubbing: His duel with Nichole is like this, in an underground dueling arena, with Shock Collars. He cheats halfway through, telling the owner of the club to switch the collars to maximum power, which the owner does out of fear of going to jail. He still loses.
- Hoist by His Own Petard: His attempt at foul play turns against him big time when he is killed by his Shock Collar after losing.
- Also, he keeps a copy of Giant Trunade in his deck, which Nichole is able to use with her Double Spell. (If you know anything about how Giese's deck works, you know that Giant Trunade would be a very potent weapon against it). As for why he has it in his deck at all, Nichole gives an explanation that makes perfect sense: Giese fancies himself an expert on Traps, so he knows how lethal they can be, and would naturally have a card that could be used to foil them.
- Shock Collar: He and Nichole wear these during their duel.
- To Hell and Back: He may have meant it as a joke, but it's impossible to say...Nichole: Go to Hell...Giese: Go to Hell? Oh, I’ve been there. It’s not as bad as people say, actually...
- Took a Level in Badass: His Garnecia Earthshaker card, which is a more powerful and retrained version of the card Garnecia Elefantis (a completely weak and outdated card by today's standards).
- Took a Level in Jerkass: Coming back from the dead only seems to have made him worse. He uses the same Hunting Deck that he used against Johan in the anime; however, using these cards against Nichole's Amazoness Monsters, which are more or less human, is... disturbing. He doesn't seem at all bothered by it; in fact, it seems to amuse him.
Yami Marik
- Evil Counterpart: Aside from being the evil counterpart of the original Marik Ishtar, he uses a deck that is filled with these.
- "Not So Different" Remark: Pulls this a lot with Ben.
- Pot Calling The Kettle Black: Ben says this about him when Marik starts boasting about his monster's effect shortly after lambasting Ben about doing the same thing during his duel with Roxy (which cost him the duel) moments earlier.
- Villains Never Lie: What he tells Ben when they first meet is not technically a lie, but it is a gross exaggeration of the truth. He tells Ben that every time he is reborn, someone else has to die. This is true, but the way it actually works isn't as bad a thing as Marik suggests.
Dr. Faker
- Early-Bird Cameo: In the epilogue of Ascension, a much younger Faker sends his men to investigate the ruins of the Hellfire Sentinel; they find something that appears to be a "black box" which may have recorded the duel within. It is implied that this is how Faker learned of the existence of the Photon Monsters that his son Kaito would eventually use (and possibly even of the existence of the Barian World where much of his technology originated).
Maximilian Pegasus/Pegasus J. Crawford
Strings
- Came Back Strong/Came Back Wrong: Both Tropes apply, and he isn't even truly alive. He's sane and able to think for himself when confronted by Dante and Sofia and almost impossible to hurt physically. On the other hand, he's both a ghost and a Humanoid Abomination cursed to guard a laptop computer with important data.
- Cruel and Unusual Death: He likely doesn't do it intentionally, but the Shadow Duel he creates threatens to cause an opponent's death by dissolution upon losing. Fortunately, Dante wins, but the process of losing Life Points is a horrible experience.
- Ghostly Goals: Actually, he has none. As he puts it, the Big Bad or someone related to him forced him to guard the laptop until it was taken. (And it eventually is.)
- More Expendable Than You: He tries to persuade Dante and Sofia to leave for this reason, telling them that the contents of the laptop are dangerous and not worth it. However, that alone tells Dante too much to dismiss it.
- Muck Monster: First of all, he is one in his current form, evident when he's wounded; he's made of corrosive slime that can resemble solid flesh. Second, his deck still uses a Slime theme, but a stronger one.
Lumis and Umbra
- Barred from the Afterlife: While physically dead, they are stranded in an in-between place called Darkspine due to the way they died, unable to enter Heaven or Hell; resembling a ruined city, souls who end up here suffer from incredible boredom and are willing to do anything to alleviate it, the reason they consider listening to Mack.
- Blame Game: Apparently, they've spent the past forty years since the fateful duel at Battle City arguing with each other, not only about whose fault the loss was, but about each other's shortcomings in general. Possibly this was because they had little else to do. Philip's speech to them convinces them to bury the hatchet... and more.
- Mask Power: This is still their deck theme, but while many of their cards are out of date, they have some newer, powerful ones, likely supplied by Mack.
- Sudden Principled Stand: When Philip convinces them that Mack is doing the same thing that Marik did - give them orders while treating them like garbage - and they're taking it, just like they took Marik's abuse, they finally decide to stand up for themselves and turn against him. Trying to fight him is pointless, but the delay helps Philip and Sofia escape.
