The following table shows the bosses appearing in Kingdom Hearts:
| Boss name | Mundo | Hardness (according to level) | 驴Secret or Legal? | Type | Reward | How to unlock | Companions | |
|---|---|---|---|---|---|---|---|---|
| Dark side | Destiny Islands | Easy | Normal | Sincoraz贸n | Access to City of Paso | |||
| Armor | City of Paso | Hard | Normal | Sincoraz贸n | Donald y Goofy | Donald y Goofy | ||
| Prestidigitador | Wonderland | Normal | Normal | Sincoraz贸n | [] | [] | [] | |
| Cerberus | Olympus Coliseum | Hard | [] | Disney | [] | [] | [] | |
| Clayton | Deep Jungle | Normal or Hard (may vary) | [] | Disney | [] | [] | Tarzan | |
| Reverse Armor | City of Paso | Easy | [] | Sincoraz贸n | [] | [] | [] | |
| Yafar | Agrabah | Normal or Hard | [] | Disney | [] | [] | Aladdin | |
| Yafar Genio | Agrabah | Normal | [] | Disney | [] | [] | Aladdin | |
| Tiger head | Agrabah | Normal or Easy | [] | Disney | [] | [] | Aladdin | |
| Parasite Cage (1st Showdown) | Monster | Normal or Hard | [] | Sincoraz贸n | [] | [] | [] | |
| Parasite Cage (2nd Showdown) | Monster | Normal or Hard | [] | Sincoraz贸n | [] | [] | [] | |
| 脷rsula | Atlantic | Normal or Hard | [] | Disney | [] | [] | Ariel | |
| Giant Ursula | Atlantic | Hard | [] | Disney | [] | [] | Ariel | |
| Oogie boogie | Halloween town | Normal | [] | Disney | [] | [] | Jack Skeleton | |
| Leon and Yuffie | Copa Pegaso | Normal | [] | final Fantasy | [] | [] | [] | |
| Cloud | Olympus Coliseum, Hercules Cup and Hades Cup (with Lion) | Difficult in all | [] | final Fantasy | [] | [] | [] | |
| Hercules | Hercules Cup | Easy, Normal or Hard | [] | Disney | [] | [] | [] | |
| Anti-Sora | Neverland country | Easy or Normal | [] | Sincoraz贸n | [] | [] | [] | |
| Captain Hook | Neverland country | Normal | [] | Disney | [] | [] | Peter Pan | |
| Riku oscuro | Hollow Bastion | Normal or Hard | [] | Original | [] | [] | [] | |
| Maleficent | Hollow Bastion | Hard | [] | Disney | [] | [] | Beast | |
| Evil Dragon | Hollow Bastion | Hard | [] | Disney | [] | [] | Beast | |
| Riku Oscuro | Hollow Bastion | Very difficult | [] | Original | [] | [] | [] | |
| Behemoth | Hollow Bastion, End of the World and Hades Cup | Easy in all | [] | [] | [] | [] | [] | |
| Chernabog | End of the world | Normal (rarely) or Hard | [] | [] | [] | [] | [] | |
| Ansem | End of the world | Easy, Normal or Hard | [] | [] | [] | [] | [] | |
| Ansem (2) | End of the world | Normal or Hard | [] | [] | [] | [] | [] | |
| Ansem (Chaotic World) | End of the world | Easy, Normal, Difficult or Very Difficult | [] | [] | [] | [] | [] | |
| Kurt Zisa | Agrabah | Difficult or Very Difficult | [] | [] | [] | [] | [] | |
| Espectro | Neverland country | Difficult or Very Difficult | [] | [] | [] | [] | [] | |
| Hades | Hades Cup | Easy, Normal or Hard | [] | [] | [] | [] | [] | |
| Rock Titan | Hades Cup | Easy or Normal | [] | [] | [] | [] | [] | |
| Ice Titan | Combat of Gold (Olympus Coliseum) | Very difficult | [] | [] | [] | [] | [] | |
| Sephiroth | Platinum Combat (Olympus Coliseum) | Very difficult (the most difficult combat of all) | [] | [] | [] | [] | [] |
