Heartless are the darkness in people's hearts, or darkness made real. They have a thirst for hearts, and are often attracted to pure hearts, such as Sora's. Their existence became known after one was created by Ansem, as revealed by his reports. Artificial Heartless were later created by Xehanort's Heartless. They first appeared in Kingdom Hearts.
When a Heartless eats a person's heart, the victim turns into a Heartless, while the mindless soul is created into a Nobody.
Types
Pure Heartless
- Shadow - Kingdom Hearts
- Neoshadow - Kingdom Hearts (seen), Kingdom Hearts: Final Mix (playable)
- Gigant Shadow - Kingdom Hearts: Final Mix
- Darkball - Kingdom Hearts
- Invisible - Kingdom Hearts
- Darkside - Kingdom Hearts
- Possessor - Kingdom Hearts II
- Shadow Stalker - Kingdom Hearts II
Artificial Heartless
- Soldier - Kingdom Hearts
- Large Body - Kingdom Hearts
- Air Soldier - Kingdom Hearts
- Defender - Kingdom Hearts
- Lance Soldier - Kingdom Hearts 2
- Armored Knight - Kingdom Hearts 2
- Stealth Soldier - Kingdom Hearts: Final Mix
- Guard Armor - Kingdom Hearts
- Opposite Armor - Kingdom Hearts
- Red Armor - Kingdom Hearts: Final Mix
- Pirate - Kingdom Hearts
- Air Pirate - Kingdom Hearts
- Battleship - Kingdom Hearts
- Cannon Gun - Kingdom Hearts 2
- Grim Reaper - Kingdom Hearts 2
- Bandit - Kingdom Hearts
- Fat Bandit - Kingdom Hearts
- Luna Bandit - Kingdom Hearts 2
- Fortuneteller - Kingdom Hearts 2
- Blizzard Lord - Kingdom Hearts 2
- Volcanic Lord - Kingdom Hearts 2
- Red Nocturne - Kingdom Hearts
- Blue Rhapsody - Kingdom Hearts
- Yellow Opera - Kingdom Hearts
- Green Requiem - Kingdom Hearts
- Black Ballade - Kingdom Hearts: Final Mix
- Crimson Jazz - Kingdom Hearts 2
- Emerald Blues - Kingdom Hearts 2
- Silver Rock - Kingdom Hearts 2
- Wizard - Kingdom Hearts
- Bookmaster - Kingdom Hearts 2
- Gargoyle Knight - Kingdom Hearts 2
- Gargoyle Warrior - Kingdom Hearts 2
- Thresholder - Kingdom Hearts 2
- Hot Rod - Kingdom Hearts 2
- Aeroplane - Kingdom Hearts 2
- Minute Bomb - Kingdom Hearts 2
- Hammer Frame - Kingdom Hearts 2
- Bulky Vendor - Kingdom Hearts 2
- Driller Mole - Kingdom Hearts 2
- Assault Rider - Kingdom Hearts 2
- Nightwalker - Kingdom Hearts 2
- Bolt Tower - Kingdom Hearts 2
- Rapid Thruster - Kingdom Hearts 2
- Storm Rider - Kingdom Hearts 2
- Crescendo - Kingdom Hearts: Chain of Memories
- Creeper Plant - Kingdom Hearts: Chain of Memories
- Tornado Step - Kingdom Hearts: Chain of Memories
- Rabid Dog - Kingdom Hearts: Chain of Memories
- Magnum Loader - Kingdom Hearts 2
- Strafer - Kingdom Hearts 2
- Devastator - Kingdom Hearts 2
- Hostile Program - Kingdom Hearts 2
- Living Bone - Kingdom Hearts 2
- Aerial Knocker - Kingdom Hearts 2
- Groundshaker - Kingdom Hearts 2
- Aquatank - Kingdom Hearts
- Sea Neon - Kingdom Hearts
- Screwdiver - Kingdom Hearts
- Jet Balloon - Kingdom Hearts: Final Mix
- Missilediver - Kingdom Hearts: Final Mix
- Sheltering Zone - Kingdom Hearts
- Barrel Spider - Kingdom Hearts
- Pot Spider - Kingdom Hearts
- Pot Scorpion - Kingdom Hearts: Final Mix
- Pot Centipede - Kingdom Hearts
- White Mushroom - Kingdom Hearts
- Rare Truffle - Kingdom Hearts
- Black Fungus - Kingdom Hearts
- Pink Agaricus - Kingdom Hearts: Final Mix
- Powerwild - Kingdom Hearts
- Bouncywild - Kingdom Hearts
- Sniper Wild - Kingdom Hearts: Final Mix
- Shaman - Kingdom Hearts 2
- Chimera - Kingdom Hearts: Final Mix
- Toy Soldier - Kingdom Hearts 2
- Graveyard - Kingdom Hearts 2
- Prison Keeper - Kingdom Hearts 2
- Search Ghost - Kingdom Hearts
- Grand Ghost - Kingdom Hearts: Final Mix
- Trick Ghost - Kingdom Hearts 2
- Behemoth - Kingdom Hearts
- Destroyed Behemoth - Kingdom Hearts: Final Mix
- Arch Behemoth - Kingdom Hearts: Final Mix
- Wight Knight - Kingdom Hearts
- Hook Bat - Kingdom Hearts 2
- Surveillance Robot - Kingdom Hearts 2
- Fiery Globe - Kingdom Hearts 2
- Icy Cube - Kingdom Hearts 2
- Morning Star - Kingdom Hearts 2
- Gargoyle - Kingdom Hearts
- Wyvern - Kingdom Hearts
- Blue Wyvern - Kingdom Hearts: Final Mix
- Angel Star - Kingdom Hearts
- Trickmaster - Kingdom Hearts
- Stealth Sneak - Kingdom Hearts
- Sneak Army - Kingdom Hearts: Final Mix
- Parasite Cage - Kingdom Hearts
- Behemoth - Kingdom Hearts
- Clock Tower Phantom - Kingdom Hearts
- Kurt Zisa - Kingdom Hearts (US/EU), Kingdom Hearts: Final Mix (Japan)
- Ansem - Kingdom Hearts
- Guardian - Kingdom Hearts
- World of Chaos - Kingdom Hearts
- Dark Thorn - Kingdom Hearts 2
- Illuminator - Kingdom Hearts 2
- Antisora - Kingdom Hearts
- Shadow Sora - Kingdom Hearts
- Scar's Ghost - Kingdom Hearts 2