Weapons

A Weapon is any object used to inflict damage by either physical or non-physical (i.e. elemental) means. In Kingdom Hearts: Chain of Memories, all characters and enemies wield Cards.

Sora
Sora is the main Keyblade wielder in the series. Sora has a Keyblade, and can attach Keychains to it to change its form, but at certain times he also uses weaker, practice weapons.

Riku
Riku was the original Keyblade wielder but when he chose the darkness, the Keyblade denied him and chose Sora instead to be the Keyblade wielder.

Roxas
As the Nobody of the Keyblade's chosen one, Roxas has the ability to wield the Keyblade. And since another Keyblade wielder is in Sora's heart, Roxas can weild 2 Keyblades. At Virtual Twilight Town, Roxas can choose one of his default Struggle Bat.

Ventus
Is one of the main protagonist of Kingdom Hearts Birth By Sleep, Ventus has the ability to wield the Keyblade. At certain times he also uses weaker, practice weapons.

Unversed

 * Buckle Bruiser- Dual Shields


 * Iron Prisoner II, III, IV- Fire Hammer


 * Mimic Master- Book


 * Symphony Master - Baton

Heartless

 * Defender - Defender (shield)
 * Wizard - Wizard's Relic
 * Bandit - Scimitar
 * Invisible - Notched broadsword
 * Kurt Zisa - Twin shotels
 * Ansem - Dual-Bladed Soul Eater
 * Bookmaster - Akashic Record
 * Shaman - Shaman's Relic
 * Runemaster - Akashic Record+
 * Necromancer - Spell's Relic+

Nobodies

 * Dragoon - Nobody Lance
 * Gambler - Cards and Dice
 * Samurai- Swords
 * Berserker - Hammer

Kingdom Hearts

 * Cards of Spades - Card's Axe
 * Cards of Hearts - Card's Lance
 * Clayton - Shotgun
 * Jafar - Magic Staff
 * Captain Hook - Pirate's Rapier
 * Maleficent - Witch's Staff
 * Giant Ursula - Trident
 * Jafar (Genie) - Magic

Kingdom Hearts II

 * Shan Yu - Barbar's Sword
 * Captain Barbossa - Pirate's Gun & Sword
 * Undead Pirate-A - Pirate's Axe
 * Undead Pirate-B - Pich
 * Undead Pirate-C - Pirate's Gun
 * Pete - Exploding balls

Party members

 * Tarzan - Spear
 * Aladdin - Scimitar
 * Peter Pan - Dagger
 * Ariel - Fist & Tail
 * Jack Skellington - Bone Fist
 * Beast - Claws

Final Fantasy characters

 * Tidus - Wooden Pole
 * Selphie - Jump Rope
 * Wakka - Blitzball
 * Leon - Gunblade
 * Yuffie - Shuriken
 * Cloud - Bandaged Buster Sword
 * Sephiroth - Masamune

Party Members

 * Captain Jack Sparrow - Skill and Crossbones
 * Auron - Battlefields of War (Also a Final Fantasy character)
 * Aladdin - Scimitar
 * Simba - Proud Fang
 * Tron - Identity Disk
 * Mulan - Sword of the Ancestor
 * Beast - Beast's Claws
 * Jack Skellington - Bone Fist

Final Fantasy characters

 * Vivi - Struggle Sword
 * Seifer - Struggle Sword
 * Setzer - Struggle Sword
 * Cloud - Bandaged Fusion Sword
 * Leon - Gunblade
 * Yuffie - Shuriken
 * Sephiroth - Masamune

Kingdom Hearts II

 * Genie - Genie's Keyblade
 * Stitch - Laser Guns / Ukulele
 * Peter Pan - Dagger
 * Chicken Little - Slingshot (during FPS mode only)

Other

 * King Triton - Trident
 * Hayner - Struggle Sword