"R" you ready?
The villain of this series, Yako Tenma, revives this classic Duelist Kingdom villain to test out the limits of his powers.
"Bandit" Keith Howard
This late-stage twist in Arc-V is so baffling, it's become about as well known as Darth Vader being Luke's father.
Yuzu being Yuma's mother
This card sparking the first true Tier Zero format directly led to Speed Duel leaving it out of its parent archetype, only printing its counterpart instead.
Cyber Angel Izana
McDonalds
After Genocide
After the Struggle
The mangaka for the spinoff went on to create this significant competitor for Yu-Gi-Oh, one which almost claimed victory in 2011.
Cardfight Vanguard
One of the few post-GX, pre-Arc-V fusion summons in the series is this Duel Dragon from the 5D's manga.
Dragonecro Nethersoul Dragon
A skill for Destiny HERO is meant to let you trigger Clock Tower Prison and summon Dreadmaster... but it does so by just giving you a copy of this independently good card.
Mystical Space Typhoon
While many people remember going to see Pyramid of Light and getting its promo cards, far fewer people know that you could get this card for seeing Bonds Beyond Time in theaters.
Malefic Red-Eyes Black Dragon
Wattkid
The token that Gorz spawns was originally a second monster with this name.
Kaien the Emissary of Darkness
These monsters were printed as Synchro Monsters in the real game, despite being main deck effect monsters in the GX manga.
Light End Dragon and Dark End Dragon.
Duel Links takes after previous video games by including anime-only cards, starting with this GX card.
Ojamandala
25th Anniversary Ultimate Kaiba Set
Kinetic Soldier
Cipher Soldier
This fusion is the manga's answer to an anime-original main deck monster, yet despite the manga's relative obscurity it decidedly trumps it in relevance. The huge attack stat doesn't exactly hurt.
Arcana Knight Joker
The final boss of the Zexal manga is the very definition of an asspull, invented for this inane reason.
The artist, Naohito Miyoshi, was tired of drawing Kyoji Nagumo.
Tori's higher-level decks focus on this Fairy archetype, seemingly in reference to her seiyuu's proficiency with the deck in real life.
The Agents
Nike
Counter Crystal
Counter Gem
Kaiba's first duel revolves around an unusual trait given to Blue-Eyes White Dragon's iconic attack.
"Magical" attack.
The Viz translation for 5D's monsters was infamously halfassed, leading to Hot Red Dragon Archfiend temporarily receiving this bewildering name that thankfully didn't make it to print.
Red Dragon Archfiend
Though many cards that occupy Duel Links's very tight Forbidden List make sense, this terrible effect monster is also present due to the existing rule about not being able to reveal an already-revealed card.
Mind on Air
Be careful you don't accidentally eat these cards; they came inside bags of this snack food.
Potato Chips
Judgment of the Pharaoh
Judgment of the Pharaoh