Abridged
In the abridged series, Joey has been occasionally mocked for being this.
Furry
This monster has several variations, each based on different emotions.
Visas Starfrost
Famously censored, these sharp-clawed femmes fatales have seen off and on play as a rogue strategy throughout Yu-Gi-Oh!'s history.
Harpie
This card was limited to one copy for two formats after its errata until it was eventually peeled off the list. Sadly this was pointless, since other more powerful versions of the card were later taken off the list due to power creep.
Brain Control
This floodgate is, to date, the only errata'd card to ever be banned a second time after it was removed from the Forbidden List.
Imperial Order
While he may have plenty of money, at one point Kaiba tried to screw the rules using this other green substance.
Hair
This monster has several iterations, most of which see him travel a path of either light or dark. Let's hope he doesn't drop in on you unexpectedly!
D/D or D/D/D
This hated card found its way on the TCG's limited list more than two years after its release because of a degenerate xeno-lock that another card facilitated. Typical Konami move.
Branded Fusion
This floodgate, still legal in Master Duel, was recently taken off the Forbidden List in the TCG and was subsequently abused in Ritual Beast.
Archnemeses Protos
This character is the only character who was originally voiced by LittleKuriboh and then had their voice actor changed in a later season.
Mai Valentine
This monster partnered with Kozaky to cook up some wild experiments. Let's hope they don't do the fusion dance.
Magical Scientist
Introduced as cards during the Duel Monsters era, this initially off-and-on playable archetype were first seen in the anime as characters.
Dark Scorpion
DAILY DOUBLE
Zoodiac Drident
While technically you can Ash this floodgate, doing so, while funny, won't yield any results.
Macro Cosmos
Tristan Taylor briefly had a running gag where these two characters lived in his head, like sorts of dissociative identities.
Zack and Cody
Deceptively large, this monster's true scale was not understood until she used the Apoqliphort Towers as her throne.
El Shaddoll Construct
This anime archetype was the "secret fifth letter" of the popular, yet eternal, TOSS format. Long live the Doug Dynasty!
Altergeist
Tour Guide from the Underworld
Pray that you aren't the fool that steps into the resting place featured on this lesser-used floodgate.
Grave of the Super Ancient Organism
Rebecca's grandfather, Arthur Hawkins, got his degree from this university.
University of Phoenix
This monster's path has many branches. Unfortunately, most of them do not end well.
Warrior of Zera
This Yu-Gi-Oh! ZEXAL archetype was never competitively viable, but they sure do let you "dish out" Rank 2 monsters.
Malicevorous
This Trap Card was released in the TCG as limited before quickly being banned. To this day, nobody can figure out why it was ever printed in the first place.
Sixth Sense
This floodgate was banned in both the TCG and Master Duel. Its original use was as part of a degenerate game-winning strategy featuring a now-banned Trap Card.
Jowgen the Spiritualist