Bosses are common encounters in the Kingdom Hearts series. They are more difficult and often larger than the lesser enemies. Bosses usually have a significant role in the storyline, but others simply serve as challenges with little plot connection in some worlds.
Heartless
- AntiSaïx - Kingdom Hearts 358/2 Days
- Anti-Sora - Kingdom Hearts
- AntiRiku - Kingdom Hearts 358/2 Days
- Antlion - Kingdom Hearts 358/2 Days
- Arch Behemoth - Kingdom Hearts Final Mix
- Behemoth - Kingdom Hearts
- Blizzard Lord - Kingdom Hearts II
- Darkside - Kingdom Hearts, Kingdom Hearts: Chain of Memories, Kingdom Hearts 358/2 Days, Kingdom Hearts coded
- Destroyed Behemoth - Kingdom Hearts Final Mix
- Dualblade - Kingdom Hearts 358/2 Days
- Grim Reaper - Kingdom Hearts II
- Groundshaker - Kingdom Hearts II
- Guard Armor - Kingdom Hearts, Kingdom Hearts: Chain of Memories, Kingdom Hearts 358/2 Days, Kingdom Hearts coded
- Guardian - Kingdom Hearts 358/2 Days
- Illuminator - Kingdom Hearts II
- Kurt Zisa - Kingdom Hearts
- Opposite Armor - Kingdom Hearts
- Parasite Cage - Kingdom Hearts, Kingdom Hearts: Chain of Memories
- Phantom - Kingdom Hearts
- Poison Plant - Kingdom Hearts 358/2 Days
- Possessor/Thresholder - Kingdom Hearts II
- Pot Centipede - Kingdom Hearts
- Prison Keeper - Kingdom Hearts II
- Red Armor - Kingdom Hearts Final Mix
- Shadow Stalker/Dark Thorn - Kingdom Hearts II
- Sneak Army - Kingdom Hearts Final Mix
- Stealth Sneak - Kingdom Hearts
- Storm Rider - Kingdom Hearts II
- Tailbunker - Kingdom Hearts 358/2 Days
- Trickmaster - Kingdom Hearts, Kingdom Hearts: Chain of Memories, Kingdom Hearts coded
- Vanish Lizard - Kingdom Hearts 358/2 Days
- Xehanort's Heartless - Kingdom Hearts, Kingdom Hearts: Chain of Memories
- Volcanic Lord - Kingdom Hearts II
- World of Chaos - Kingdom Hearts
Nobodies
- Absent Silhouettes - Kingdom Hearts II Final Mix
- Axel - Kingdom Hearts: Chain of Memories, Kingdom Hearts II
- Demyx - Kingdom Hearts II
- Fake Marluxia - Kingdom Hearts: Chain of Memories
- Larxene - Kingdom Hearts: Chain of Memories
- Lexaeus - Kingdom Hearts: Chain of Memories
- Luxord - Kingdom Hearts II
- Marluxia (Angelic) - Kingdom Hearts: Chain of Memories
- Marluxia (Spectre) - Kingdom Hearts Re:Chain of Memories
- Roxas - Kingdom Hearts II Final Mix
- Saïx - Kingdom Hearts II, Kingdom Hearts 358/2 Days
- Shadow Roxas - Kingdom Hearts II
- Twilight Thorn - Kingdom Hearts II
- Vexen - Kingdom Hearts: Chain of Memories
- Xaldin - Kingdom Hearts II
- Xemnas - Kingdom Hearts II
- Xemnas (Armor) - Kingdom Hearts II
- Xemnas (Dragon) - Kingdom Hearts II
- Xemnas (Final) - Kingdom Hearts II
- Xigbar - Kingdom Hearts II
- Zexion - Kingdom Hearts Re:Chain of Memories
Unversed
- Wheel Master - Kingdom Hearts Birth by Sleep
- Unversed Carriage- Kingdom Hearts Birth by Sleep
- "The musician" Unversed - Kingdom Hearts Birth by Sleep
Disney Bosses
Major
- Captain Barbossa - Kingdom Hearts II
- Captain Hook - Kingdom Hearts
- Cerberus - Kingdom Hearts, Kingdom Hearts II Kingdom Hearts coded
- Chernabog - Kingdom Hearts
- Clayton - Kingdom Hearts
- Commander Sark - Kingdom Hearts II
- Hades - Kingdom Hearts, Kingdom Hearts: Chain of Memories, Kingdom Hearts II Kingdom Hearts coded
- Hydra - Kingdom Hearts II
- Ice Titan - Kingdom Hearts
- Jafar - Kingdom Hearts Kingdom Hearts coded
- Jafar (Genie) - Kingdom Hearts, Kingdom Hearts: Chain of Memories, Kingdom Hearts II Kingdom Hearts coded
- Lucifer - Kingdom Hearts Birth by Sleep
- Maleficent - Kingdom Hearts
- Maleficent (Dragon) - Kingdom Hearts, Kingdom Hearts: Chain of Memories, Kingdom Hearts Birth by Sleep
- Master Control Program - Kingdom Hearts II
- Magic Mirror - Kingdom Hearts Birth by Sleep
- Oogie Boogie - Kingdom Hearts, Kingdom Hearts: Chain of Memories, Kingdom Hearts II
- Oogie's Manor - Kingdom Hearts
- Pete - Kingdom Hearts II, Kingdom Hearts 358/2 Days Kingdom Hearts coded
- Queen of Hearts - Kingdom Hearts
- Rock Titan - Kingdom Hearts
- Scar - Kingdom Hearts II
- Shan-Yu - Kingdom Hearts II
- Ursula - Kingdom Hearts, Kingdom Hearts: Chain of Memories
Minor
- Beast - Kingdom Hearts II
- Card Soldiers - Kingdom Hearts, Kingdom Hearts: Chain of Memories
- Cave of Wonders Guardian - Kingdom Hearts
- Glut - Kingdom Hearts
- Hercules - Kingdom Hearts, Kingdom Hearts II
- Lock, Shock, and Barrel - Kingdom Hearts, Kingdom Hearts II, Kingdom Hearts 358/2 Days
- Pete (Timeless River) - Kingdom Hearts II
- Sabor - Kingdom Hearts
- Shenzi, Banzai and Ed - Kingdom Hearts II
Final Fantasy Bosses
- Cloud - Kingdom Hearts, Kingdom Hearts: Chain of Memories, Kingdom Hearts II
- Leon - Kingdom Hearts, Kingdom Hearts II
- Seifer - Kingdom Hearts II
- Sephiroth - Kingdom Hearts II
- Setzer - Kingdom Hearts II
- Tidus, Selphie, and Wakka - Kingdom Hearts
- Tifa - Kingdom Hearts
- Vivi - Kingdom Hearts II
- Yuffie - Kingdom Hearts, Kingdom Hearts II
Other
- The Experiment - Kingdom Hearts II
- Hayner - Kingdom Hearts II
- Hostile Program - Kingdom Hearts II
- Lingering Sentiment - Kingdom Hearts II Final Mix
- Riku - Kingdom Hearts, Kingdom Hearts II, Kingdom Hearts 358/2 Days
- Riku Replica - Kingdom Hearts: Chain of Memories
- Xion - Kingdom Hearts 358/2 Days
- Jiminy's Journal - Kingdom Hearts coded
- Braig - Kingdom Hearts Birth by Sleep