This table is in game order (with optional bosses listed at the earliest possible times you can access them) using the GBA names, with SNES names in [brackets] when names significantly differ.
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Wing Raptor | X | X | X | X | X | X | X | X | X | X | X | ||||
| Karlabos | X | X | |||||||||||||
| Siren (Human) | X | X | X | X | X | X | X | X | X | X | |||||
| Siren (Undead) | X* | X | X | X | |||||||||||
| *Not useful for Undead form, Life/Phoenix Down checks for Heavy flag instead. | |||||||||||||||
| Magissa | X | X | X | X | X | X | |||||||||
| ---Forza--- | X | X | X | X | X | X | X | X | X | X | |||||
| Forza arrives after Magisa takes enough damage, possible to skip Forza outright. | |||||||||||||||
| Garula | X | X | X | X | X | X | X | X | X | X | X | X | X | ||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Shiva | X | X | X | ||||||||||||
| ---Ice Commander--- | X | X | X | X | X | X | X | X | X | X | X | X | X | X | |
| Liquid Flame (Hand) | X | X | |||||||||||||
| Liquid Flame (Human, Tornado) | X | X | X | ||||||||||||
| Form changes after taking damage. | |||||||||||||||
| Iron Claw | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
| ---Sergeant--- | X | X | X | X | X | X | X | X | X | X | X | X | X | ||
| ---Cur Nakk--- | X | X | X | X | X | X | X | X | X | X | X | X | X | X | |
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Ifrit | X | X | X | X | X | X | X | X | X | X | X | ||||
| Byblos | X | X | X | X | X | X | |||||||||
| Ramuh | X | X | X | X | X | X | X | ||||||||
| Sandworm | X | ||||||||||||||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| CrayClaw | X | X | X | X | X | X | X | X | X | X | X | X | |||
| Adamantoise | X | X | X | X | X | X | X | X | |||||||
| Soul Cannon | X | ||||||||||||||
| ---Launcher--- | X | X | |||||||||||||
| Archeoaevis (Forms 1,3,5) | X | X | |||||||||||||
| Archeoaevis (Forms 2,4) | X | X | X | ||||||||||||
| Each form changes after you "kill" the last form. Form 5 triggers the Tycoon dialogue. | |||||||||||||||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Purobolos | X | X | X | X | X | X | X | X | X | X | X | ||||
| Titan | X | X | X | ||||||||||||
| Manticore [Chim. Brain] | X | X | X | X | X | X | X | X | X | X | |||||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Gilgamesh 1 (Exdeath Basement) | X | X | X | X | X | X | X | X | X | ||||||
| Gilgamesh 2 (Big Bridge) | X | X | X | X* | X | ||||||||||
| *Only applicable in SNES and PS1 versions. GBA and Mobile/Steam versions remove this weakness. | |||||||||||||||
| Tyrannosaur | X | X* | X | X | X | X | |||||||||
| *Undead, so use Life magic or Phoenix Down instead. | |||||||||||||||
| Abductor | X | X | X | X | X | X | X | X | X | X | X | ||||
| Dragon Pod [HiryuuPlant] | X | X | X | X | X | X | X | ||||||||
| ---Dragon Flower--- | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Gilgamesh 3 (Ship) | X | X | X | X | X | X | |||||||||
| ---Enkidu--- | X | X | X | X | X | X | X | ||||||||
| Atomos | X | ||||||||||||||
| Catoblepas [Shoat] | X | X | |||||||||||||
| Crystal [Seal Guardian] | X | X | X | X | |||||||||||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Gilgame [Gil Turtle] | X | ||||||||||||||
| Carbuncle (Form 1) | X | X | X | ||||||||||||
| Carbuncle (Form 2) | X | X | X | X | X | X | X | X | X | X | X | X | X | ||
| Form 2 triggers after three spells of Form 1. It casts Cure 2 in this form. | |||||||||||||||
| Gilgamesh 4 (Exdeath Castle) | X | ||||||||||||||
| Exdeath (World 2) | X* | ||||||||||||||
| *Counters Slow with Haste, so avoid unless using Wall shenanigans. | |||||||||||||||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Antlion | X | X | X | X | X | X | |||||||||
| Gargoyle | X | X | X | X | X | X | X | X | X | X | X | ||||
| Melusine [Merugene] | X | X | X | X | X | X | X | ||||||||
| Odin | X | X | X | X | X | X | X | X | X | ||||||
| Bahamut | X | X | X | X | |||||||||||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Wendigo [Stalker] | X | X | X | ||||||||||||
| Minotauros | |||||||||||||||
| Omniscient | X | X | X | X | X | X | X | ||||||||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Gogo | X | X | |||||||||||||
| Triton / Phobos / Nereid | X | X* | X | X | X | X | X | X | X | X | X | ||||
| *Undead, so use Life magic or Phoenix Down instead. | |||||||||||||||
| Leviathan | X | X | X | ||||||||||||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Calofisteri | X | X | X | X | X | ||||||||||
| Omega | X | X | |||||||||||||
| Apanda | X | X | X | X | |||||||||||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Azulmagia [Apocalypse] | X | ||||||||||||||
| Catastrophe | X | X | X | X | |||||||||||
| Halicarnassus | X | X | X | X | X | ||||||||||
| Twintania (Form 1) | X | X | X | ||||||||||||
| Twintania (Form 2) | X | X | X | X | X | X | X | X | |||||||
| Form 2 appears when Twintania is charging up for Giga Flare | |||||||||||||||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Gilgamesh 5 (Void) | X | ||||||||||||||
| Shinryu | X | X | X | X | |||||||||||
| Necrophobe | X | X | X | ||||||||||||
| ---Barrier--- | X | X | X | X | X | ||||||||||
| BOSS NAME | Not Heavy | Death | Stone | Toad | Mini | Poison | Blind | Old | Sleep | Paralyze | Confuse | Berserk | Mute | Stop | Slow |
| Exdeath (World 3) | X | ||||||||||||||
| Neo Exdeath (Magic) [Bottom-Left] | X | X | X | X | X | X | |||||||||
| Neo Exdeath (Grand Cross) [Top-Left] | X | X | X | ||||||||||||
| Neo Exdeath (Almagest) [Bottom-Right] | X | X | X | X | X | ||||||||||
| Neo Exdeath (Physical) [Top-Right] | X | X | X | X | |||||||||||