Before anything this chapter will show who has what type of deck also some characters might not be added either because they're not important or I couldn't think of one for them

Zeoticus Gremory: Immortal Earthbound Deck

Sirzechs Gremory: Exodia Deck

Rias Gremory: Burning Abyss Deck

Akeno Himejima: Watts/Thunder Dragon Deck

Koneko Toujou: Shiranui Deck

Yuuto Kiba: Warrior Deck

Issei Hyoudou: All girl deck (starts), Spellcaster Deck (after being reincarnated)

Asia Argento: Fluffal/Frightfur Deck

Xenovia Quarta: Amazoness Deck

Rossweisse: Aesir God Deck

Sona Sitri: Atlantean Deck

Serafall Leviathan: White Aura Deck

Saji: Dark World Deck

Lord Phenex: Fire King Deck

Riser Deck: Flamvell Deck

Ravel Phenex: Hazy Flame Deck

Mittlet: Harpy Deck

Kalawarner: Blackwing Deck

Raynare: Raidraptor Deck

Dohnaseek: Infernity Deck

Kokobiel: Eyes of Restrict Deck

Azazel: Dark Lord Deck

Michael: Lightsworn Deck

Irina Shidou: Gladiator Beast Deck

Vali Lucifer: Junk Deck

Kuroka Toujou: Mayakashi Deck

Kunou: Zoodiac Deck

Yasaka: Danger! Deck

Shalba Beelzebub: Insect Deck

Diodora Astaroth: Predaplant Deck

Ophis: Venom/Reptilianne/Abhyss Deck