Paradox Brothers:
No unused quotes:
- Dark Guardian(GX animé)
- Defense Wall (GX animé)
- Dark Element (GX animé)
- Gate Guardian Ritual (Duelist of Roses exclusive)
- Labyrinth of Kline (5D's animé, used by Duelbot Ghost)
Lumis and Umbra:
- Mask of Impregnability (Umbra, DM, also appears in manga)
Pandora:
- Beckon to the Dark (animé/manga, appeared in-game)
- Cursebreaker (animé, used by Yami Yugi)
Chazz Princeton:
- Pride Shout (GX animé, appeared in-game)
Alexis Rhodes
- Prima Light
Velian Crowler:
- Ancient Gear Inspection (ARC-V animé, used by Yuri)
- Crazy Summon Gear (GX animé)
- Desperate Battle (GX animé)
- Unfinished Ancient Gear (ARC-V animé, used by Yuri)
- Unfinished Time Box (GX animé)
Yubel
Chaos Core (GX animé)(became an official card)- Zero Sprite (GX animé, appeared in-game)
Leo:
- Central Shield (5D's animé, appeared in-game)
- Double Ripple (5D's animé, appeared in-game)
- Pain to Power (5D's animé, appeared in-game)
- Power Converter (5D's animé, appeared in-game)
Armored White Bear (5D's animé, appeared in-game) (see below, not unused)(Became an actual card)- Central Shield (5D's animé, appeared in-game)
- Double Ripple (5D's animé, appeared in-game)
- Pain to Power (5D's animé, appeared in-game)
Bastion Misawa:
- Conduction Warrior Linear Magnum ±
- Magnet Warrior Σ+
- Magnet Warrior Ω-
- Plasma Warrior Eitom (see below, not unused)
- Magnet Force Minus
- Magnet Force Plus
Tyranno Hassleberry:
- Dark Tyranno
- Spacesaurus (??)
Sartorious Kumar
- Arcana Force II - The High Priestess
- Arcana Force V - The Hierophant
- Arcana Force VIII - The Strength (GX animé, appeared in-game)
- Arcana Force VIX - The Hermit
- Arcana Force X - Wheel of Fortune
- Arcana Force XI - Justice
- Arcana Force XII - The Hangman(GX animé, appeared in-game)
- Arcana Force XIII - The Reaper
- Arcana Force XV - The Fiend (GX animé)
- Arcana Force XVI - The Tower
- Arcana Force XVII - The Star
- Arcana Force XIX - The Sun
- Arcana Force XX - Judgement
- The Material Lord(GX animé, appeared in-game)
- The Sky Lord(GX animé, appeared in-game)
- The Spiritual Lord(GX animé, appeared in-game)
- Suit of Sword X(GX animé, appeared in-game)
Yusei Fudo:
- Speed Spell - Angel Baton (5D's animé, appeared in-game)
Kalin Kessler:
- Infernity Burst (5D's animé)
- Speed World 2 (5D's animé, appeared in-game)
- Altar of the Bound Deity (5D's animé, appeared in-game)
- Contaminated Earth (5D's animé, appeared in-game)
Infernity Pawn (5D's manga)Became an actual card.- Infernity Queen (5D's manga)
Infernity Sage (5D's manga)Became an actual card.- Infernity Shield Bearer (5D's manga)
- Infernity Spear Bearer (5D's manga)
- Infernity Zero (5D's animé, appeared in-game)
- Passion of Baimasse(5D's animé, appeared in-game)
- Infernity Climber (5D's animé)
- Speed World (5D's animé)
Jesse Anderson:
- Amber Crystal Circle
- Crystal Flash
- Crystal Fortress
- E Force
- G Force
- GEM Burst
Golden Rule(became an actual card)- M Force
- Rainbow Blessing (GX)
- The One to be Protected
Blair Flannigan:
- Mystic Revolution
- Mystic Egg
- Mystic Baby Magician
- Mystic Baby Knight
- Mystic Baby Dragon
- Mystic Dragon
- Mystic Magician
- Mystic Knight
- Spike Egg
Aigami:
- Cubic Defense
- Ojamandala
- Synchro Spirits
- Card of Distrain
- Mach Synchron
- Plasma Warrior Eitom
Noble Knight's Shield Bearer(Became an actual card)Noble Knight's Spear Bearer(Became an actual card)Armored White Bear(Became an actual card)- Maiden in Love
- Cupid Kiss
- Jester Queen
- Jester's Panic
- Kiteroid
- Dark Archetype
Centaur Mina(Became an actual card)Horse of the Floral Knights(Became an actual card)- Defense Maiden
- Happy Marriage
Ice Mirror(Became an actual card)- Double Ripple
- Synchro Monument
- Toy Emperor
- Toy Solider
- Crowning of the Emperor
- Pain to Power
- Synchro Back
- Dimension Equilibrium
- Changing Destiny
- Zero Sprite
- Pride Shout
- Infernity Des Gunman
- Double Type Rescue
- Sacred Defense Barrier
- Power Converter
- Malefic Force
- The Unchosen One
- High and Low
Antidote Nurse(Became an actual card)- Playmaker
- Flame Wall
- Volcanic Wall
- Blizzard Lizard
- Attribute Bomb
- Satellite Laser Balsam
- Labyrinth of Kline
- Tomato King
- Tomato in Tomato
- Cosmos
- Fire Lily
- Gold Coins for Cats
- Cat Girl Magician
- Cat Girl
- Stray Cat Girl
- Spark Breaker
- Wisel Attack 3
- Wisel Top
- Wisel Guard
- Wisel Attack
- Wisel Carrier
- Wisel Top 3
- Wisel Guard 3
- Hook the Hidden Knight
- Twin Vortex
- Battle Return
- Infinity Force
- Stray Cat
- Monster Cat
- Inviting Cat
Ashoka Pillar(Became an actual card)Crystal Skull(Became an actual card)- Absurd Stealer
- Granel Attack
- Granel Carrier
- Skiel Guard
- Wisel Guard 3
- Aurora Draw
- Chaos Bloom
- Southern Stars
- Power Zone
- Masked Knight LV3
- Masked Knight LV5
- Masked Knight LV7
- Ferocious Flora
- Indestructible Airship Hindenkraft
- Unsinkable Titanica
- Amazoness Arena
- Chaos Distill
- D - Mind
- Altar of the Bound Deity
- Passion of Baimasse
- Contaminated Earth
- Chain Close
- Imitation
- Gjallarhorn
- Beast Burial Ritual
- Dimension Equilibrium
- Divergence
- Hidden Pasage
Cabrera Stone(Became an actual card)Triangle O(Became an actual card)- Tribulldog
- Load of Darkness
- Attribute Gravity
- Attribute Chameleon
- Cat World
- Attribute Mastery
- Doubulldog
- Dogking
- Dark Arena
- Time Angel
- Empress's Staff
- Scab Scarknight
- Archfiend Matador
- Ritual of the Matador