Spell Series
Staple Spells that focus on adding cards to hand
Pot, Pot of
This Level 6 Fusion monster was a non-effect monster in the GX manga
Masked HERO Dark Law
A Level 6 Warrior that can special another copy of itself
Destiny HERO - Malicious
This Level 1 Machine monster's name is more suited for a location, rather than a monster
Cyber Valley (Cyber Vary)
Black Luster Ritual
Black Luster Soldier
Spells that mostly deal with flipping monsters face-up and face-down
Book, Book of
These cards were main deck effect monsters in the manga, but ended up as Synchro monsters in the real game (two answers accepted)
Dark End Dragon or Light End Dragon
A monster that can stall and gain you 3000 LP if you use all three copies
Nimble Momonga
You'll be blown away by the made-up word in this banned Normal Spell's name
Giant Trunade (Giant Tornado)
Contract with the Dark Master
Dark Master - Zorc
Quickplay Spells that manipulate ATK, but also have side effects
Forbidden
While this Synchro monster's effect is the same between the manga and real game, in the manga, it is a Tuner
Stardust Spark Dragon
A 1600 ATK monster that can add copies of itself from deck to hand
Thunder Dragon
This Equip Spell depicts a person with a big gun, but the name might imply that person is a farmer
Buster Rancher (Buster Launcher)
End of the World
Classy Normal Spells that target face-down cards
Nobleman
This Xyz monster's manga effect sets its ATK to its Rank times 1000, while its real game effect sets it equal to a number
Number S39: Utopia the Lightning
A Dragon monster that can special summon a copy of itself when destroyed by battle
Troop Dragon
While this banned Trap card's name sounds correct, the art depicts a trap door instead of any projectiles
Trap Dustshoot (Trap Dustchute)
Lycanthrope
Spell cards that usually involve declaring a card name
Designator
This Xyz monster has a simple ATK-gain effect in the manga, but a powerful floodgate effect in the real game
Number S0: Utopic Zexal
A monster that can special summon a copy of itself from the deck when destroyed by battle, and also has a burn effect involving targeting
Mecha Bunny
Instead of an undead king, this monster is just a friend named Richard
Fushioh Richie (Undying King, Lich)
Contract with the Abyss
Any DARK Ritual Monster