- Idea
- Idea Drive
- Idea of Adoration, Kalavinka
- Idea of Assistance, Fierte
- Idea of Astral, Hastur
- Idea of Brilliance, Innocent Star
- Idea of Calamity, Maldicion
- Idea of Collapse, Realm Razer
- Idea of Comradeship, Feuille
- Idea of Conquest, Alexander
- Idea of Courage, Ugly
- Idea of Delusion, Vesparose
- Idea of Determination, Type.I "A-Z"
- Idea of Dreams, Pecteilis
- Idea of Endlessness, Sieger
- Idea of Family, K2
- Idea of Fantasy, Nei
- Idea of Fate, Animus
- Idea of Galaxy, Orichalcum Tyranno
- Idea of Guidance, Phosflamme
- Idea of Harmony, Noble Grove
- Idea of Hero, Maine Coon
- Idea of Honesty, Synchrotron
- Idea of Invincibility, Almotaher
- Idea of Loveliness, Marie
- Idea of Mobility, Helical Fort
- Idea of Monarch, Eudi
- Idea of Musical, Frederica
- Idea of Origin, Last Theorem
- Idea of Promise, Rigel
- Idea of Pureness, Gandiva
- Idea of Sincerity, Nu
- Idea of Stars, Prism
- Idea of Supremacy, Cyclotron
- Idea of Tranquility, Michael
- Idea of Turmoil, Crepus
- Idea of Ultimate, Lawrencium
- Idea of Unbeatability, Rindo
- Idea of Valor, Lord Crimson
- Idealize
- Idealize Enjoy Deck
- Idealize Enjoy Set
- Idee Genial the Good Idea
- Idol Etna
- Idol Overlord, Laharl-chan
- Idol Research Student, Nu
- Idol of the Wonderland, Alice
- Ignition Kubota
- Ignition Kubota (card)
- Ignition Machine, Pyro
- Ignition Overboost
- Ignition Overdrive
- Ignition Phase
- Il-Immaru
- Il-Lak-Saharu
- Illegal Slayer Deathbringer Sword, Maldicion
- Illegal Slayer Engage, Iriuda Orondo
- Illuminate Artistic Engage, Goddess Amenouzume
- Illusion Noise
- Illusion in the Deep Green, Benihime
- Illusion the Fantasy
- Illustrious
- Illustrious, Promise Ring of Oath
- Imitating Latency, Tcho-Tcho
- Imitation Wasp Spy, Mimicry Syrphi
- Immeasurable Flame, Kagutsuchi
- Immense Hidden Swordsmanship, Kaoriendou
- Immovable Super Mushroom Deity, Shimeji
- Imperator Judge
- Imperial Guard Captain, Somali
- Imperial Protection
- Imperial Rejection
- Impetuous Golden Claw, Almotaher
- Improvised Keyboardist, Sarnas
- Impure Holy Beast, Aura Bicorn
- In Charge of Production, Skeletal Maker
- In High Spirits Today, Kei
- In Newlywed Mood, Rika Shiramine
- Incandescent Heavenly Slayer, Kan'u Unchou
- Incandescent Magma, Magma Ankylo
- Incendiary Machine, Burndown
- Incineration
- Inciting Toyger
- Incognito Trip, Ugly
- Incorruptible Feelings, Fierte
- Indecisive Appetite, Mullein
- Indestructible Wooden Sword, Jinchoge
- Indianapolis
- Indie Rock, Armed
- Indomitable Fighting Spirit, Sanada Yukimura
- Indomitable Guardian
- Indomitable Steel, Steel Leopard
- Inducement of Skating, Layback
- Inducing Blade Insect, Cabbage Earwig
- Inept Detective, Russian Blue
- Inexhaustible "Creation", Lulu
- Inexhaustible Grudge, Cursed Soul
- Infatuating Bird of Love, Muu Shuwuu
- Infini the Infinite
- Infinite Gift, Sieger
- Infinite Solitude
- Infinite Union, KHD-8000
- Infinity Holy Beast, Odradek
- Ingenious Schemer, Kuroda Kanbe
- Inheritor Dragon, Blaze Knight
- Initial Extermination Burst, Type.VI
- Innocent Blessing, Purity
- Innocent Curiosity, Borte Chino
- Innocent Jump, Were-Serval
- Innocent Pure Lumensword, Innocent Star
- Innocent Pure Prayer, Nino D-Maiden
- Innocent Young Warrior, Ichihatsu
- Inquisitor, Visco
- Insolent Scythe, Nire
- Install
- Instant Shoot, Quick Draw
- Instigating "Cadence", Tiamat
- Instructor of Rank E, Ira
- Instrumentalist of the Tombcastle, Lapyer
- Intelligent Doctor, Feuille
- Intention of Yggdrasil
- Intercepting Sonne
- Intimate Honeymoon, Marshall
- Into Summer! Were-Cat
- Invaluable Joy
- Invidia × Mystic Eye Meteor
- Invigorator of Chaos, Orichalcum Tyranno
- Invincible Haniwa, Honey-One
- Invincible Mud Soldier, Honey-Hey
- Invisible Iron-Cutting Sword, Kikyou
- Invisible Wall, Giansar
- Invitation to Elegance, Crepus
- Invitation to Embrace
- Invitation to Struggle
- Inviting Lovewind from Dream, Hastur
- Invulnerable Dragonslaughterer, Siegfried
- Invulnerable Man, Technetium
- Invulnerable Steelfist, Technetium
- Iriuda Orondo
- Iriuda Orondo (card)
- Iriuda and Maldicion, Oath to the Illegal Slayer
- Iron-Blooded Director, Kuroprezle
- Iron-Cutter Craftsman, Clipper
- Iron Claw of Arbor, Nekoshide
- Iron Claw of Green Sky, Misohagi
- Iron Fang of Assault, Inushide
- Iron Pyrite, Pyrite Tortoise
- Iron Shoe Craftsman, Greave
- Ironthread Silkmoth, Metal Bombyx
- Irreconcilable Darkness, Realm Razer
- Irregular X
- Irregular X, BrighTron the Crumbleblade Judgemech
- Irregular X, CyberRex the Elecdragon Crusherblade
- Irregular X, Damnation
- Irregular X, Erase
- Irregular X, Excruci
- Irregular X, Seraphinia the Whitewing Flash
- Isolated Calamity, Asmodeus
- It's Injection Time
- Itsukushima Mechanical Deity, Zirconium
- Ivory-Serpent of Calamity, Grootslang
- Ivy Tower Manager, Ms. Dungeon
- Izumo Miyakonojo
- Izumo Miyakonojo (card)
- Izumo and Gandiva, Oath to the Burning Crusade
- Jack-o'-Lantern the Pumpkin Ghost
- Jack Baker
- Jam Session
- Janvier the January
- Japanese Beastman, Were-Ibis
- Japanese Pieris Beetle, Andro Tiger
- Jasper Antelope of Will, Jasper Rupica
- Jasper Arch Flash, Ivy Wing
- Jasper Feathers, Ivy Wing
- Javelin
- Javelin (Retrofit)
- Jealous Serpent, Kiyohime
- Jester of Mourn, Avaritia
- Jester of the Tombcastle, Punire
- Jet-Black Blade, Sieger
- Jet-Black Clawed Wings, Sieger & Almotaher
- Jet-Black Declination, Destiny Bane
- Jet-Black Demon Blaster
- Jet-Black Devil, Niger
- Jet-Black Fallen Boundary
- Jet-Black Holy Beast, Aura Girimekhala
- Jet-Black Lawrencium
- Jet-Black Ruin, Destiny Bane
- Jet-Black Whirlwind, Sieger
- Jet Crescent
- Jet Touring, Lord Crimson
- Jewel Beast, Aura Carbuncle
- Jintsuu
- Jitte of Justice, Suzuna
- Joint Training
- Jousting Maestro, Joust
- Joyful Stage, Ugly
- Joyful String Performer, Marianne
- Judge Halberd, Carina
- Judgment Machine, Decide
- Judgment Strike, Fierte
- Juillet the July
- Juin the June
- Jump Victory Carnival 2014
- Jumping Sprinter
- Justice Dekopin
- Justice Fate, Lawrencium
- Justice Gift, Lawrencium
- Justice Gran Dekopin
- Justice Great Victory! Lawrencium
- Justice Magnum, Lawrencium
- Justice Might Engage, Sento Reia
- Justice Wedding, Lawrencium
- Juvenile Angel, Gambiel-chan
- K2's Aide, Marshall
- K2's Subordinate, Roraima
- Kaga
- Kaga Kaede
- Kagura Miko, Ocicat
- Kaiten Mutenmaru
- Kalavinka
- Kalavinka's Friend, Gumyōshichō
- Kalavinka & Rigel
- Kalavinka and Honome, Maternal Bonds
- Kaleido Desire Engage, Animus
- Kaleido Santa, Animus
- Kamone Fudahiki
- Kana Producer
- Karakuri Show Party!
- Karmic Confrontation vs Gambiel
- Kasuga Kurosaki
- Kasuga Kurosaki (card)
- Kasuga and Nei, Oath to the Memento Road
- Kawakaze
- Keen Citrine, Citrine Raptor
- Keen Scholar, Gandiva
- Keep an Oath, Valvatorez
- Keeper of Oracle, Delphyne
- Keeping the Public Morals, Goddess Selene
- Kenjaku of Sowing and Reaping Evil, Nanda
- Key
- Key of Angel Knight, Asuka Tennoji
- Key of Battle Suit, Reia Sento
- Key of Beast King, Soma Kembuchi
- Key of Blazing Soul, Izumo Miyakonojo
- Key of Brave Griffin, Yachiyo Kamiyugi
- Key of Butterfly Dream, Kasuga Kurosaki
- Key of Dear Fam, Nanao Shishisima
- Key of Dream Princess, Urara Yato
- Key of Eternal Heart, Ea D-Maiden
- Key of Fatal Destruction, Barahara D-Maiden
- Key of Full Bloom, Kushuru D-Maiden
- Key of Galaxy Guardian, Chitose Aoba
- Key of Harmony Affection, Misaki Yuzuriha
- Key of Holy Exorcist, Nina Shitori
- Key of Metal Fortress, Suguru Raicho
- Key of Never End, Kisara Domeki
- Key of Night Queen, Ayase Kamiyugi
- Key of Paradise Song, Honome Chogasaki
- Key of Passionate Phoenix, Sakura Kamiyugi
- Key of Phantom Thief, Shana Sakurakoji
- Key of Princess Dream, Yutaka Tenryu
- Key of Renegade Hero, Yamato Tennoji
- Key of Sparkle Judgement, Nino
- Key of Spiral Gadget, Yui D-Maiden
- Key of Star Princess, Azumi Kagamihara
- Key of True Lies, Mikado Kurosaki
- Key of Tyrant Bazooka, Sera Kurashiki
- Key of Valiant Spirit, Meiraru D-Maiden
- Key of World Slayer, Iriuda Orondo
- Key of the Memory Type.I "A-Z"
- Khakkhara of Patience, Sazanka
- Ki
- Kick-Away Break Striker
- Kigurumi Lover! Curcuma
- Kii and Vesparose Mami
- Killer Machine
- Killer Tooth
- Killia (card)
- Kind Demon, Killia
- King of Beasts, Were-Lion
- King of World Demolition, Satan
- King of the Underworld, Curl
- Kinkalow of the Hot Spring Inn
- Kinrenka the Bookworm
- Kisara Domeki
- Kisara Domeki (card)
- Kisara and Vesparose, Oath to the Honey Reborn
- Kisaragi
- Kittling Tickling
- Kitty Maid, Momo the Bear
- Kitty Savior Engage, Nina Shitori
- Kitty Savior Vanguard, Maine Coon
- Knight of Salvation, Sagarmatha
- Knights of the Round Table
- Koakuma Princess, Type.IV
- Kodachi of Good Fortune, Omoto
- Koga Kunoichi, Mochizuki Chiyome
- Korat the Painter
- Kourin the Mountaineering Enthusiast
- Kung Fu Bunny, Were-Panther
- Kung Fu Lady, Asagi
- Kushuru, Prayer of the Noble Unify
- Kuzuryu Gakuin University
- Kylie Shaddow, Thyone
- Kyuso Neko o Kamu "Regular", Lalami
- L'Automne the High Autumn
- LaPerm the Sure-Kill Divine Sword
- La Mer Promenade, Frederica
- Lady Etiquette, Marimena the Tombcastle Princess
- Lady of Nature Sounds, Ayame
- Lady of the Forest, Were-Okapi
- Laevateinn, Pledge of the Searing Blaze
- Laffey
- Laffey (Retrofit)
- Laharl (card)
- Lalami
- Lamenting Melody Princess, Verbena
- Landing Ship, Altisonante
- Laplace's Demon, Kashi Brum
- Large Bore, Australis
- Large Fireworks Technician, Kaho
- Large Sword Workshop, Claymore
- Largest Giant Insect, Elephant Okabuto
- Larval Holy Beast, Aura Heqet
- Laser Blade, Benetnasch
- Laser Cannon, Meridiana
- Laser Scythe, Avior
- Last Dance
- Last Song, Sisera
- Latest in Fashion☆Haruka-chan
- Laughing Aloud, Laharl
- Launcher Craftsman, Rocketta
- Laundry Beastman, Were-Racoon
- Lawbringer, Aconcagua
- Lawbringer, Aneto
- Lawbringer, Annapurna
- Lawbringer, Ararat
- Lawbringer, Athos
- Lawbringer, Batura
- Lawbringer, Carstensz
- Lawbringer, Chacrarahu
- Lawbringer, Chamlang
- Lawbringer, Chhish
- Lawbringer, Cho Oyu
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