This page lists where to find the different bosses that have a chance to drop Key Items or a high-value reward. This does not include the four Gargoyle Statue fights, or bosses in the Void, because they never provide rewards.

For the following chart, depending on your settings, World 2 locations may require the Adamantite (to unlock world 2), and World 3 locations may require the Elder Branch & Bracelet (to unlock Exdeath's Castle, where defeating Exdeath awards World 3 access). Refer to this page for a boss tiering explanation.

A visual reference can be found here

For the below, any item in brackets means you need that key item or to have defeated the listed boss location in order to access it.

• WingRaptor: Top floor of the Wind Shrine. Can also be found there in World 3.
• Karlabos and Siren: Enter the Torna Canal. After fighting Karlabos, you’ll be taken to the Ship Graveyard, where Siren awaits at the end.
• Magisa & Forza: On North Mountain. Can also be found there in World 3.
• AdamanTiMi: In the Meteor next to Tycoon Castle.
• Shiva: Enter Walse Castle, then head into the moat on the east side. Head to the waterfall in the back and walk into it to find a small tower with Shiva at the top.
• Crayclaw: Enter the Ruined City north of Jacole and head straight up to be dropped into the underground base. Proceed to the furthest ship there, go down the missable stairs, and talk to Cid. This prompts the airship to lift off. Talk to Cid again on deck to trigger the fight.
• Ifrit: In the Ancient Library, near the start of the dungeon.
• Puroboros At the meteor next to the Walse Tower.
• Titan: Inside the meteor east of Karnak.
• Chimera Brain (defeat Crayclaw): After defeating Crayclaw, the Ruined City will instead be replaced with a meteor. Chimera Brain is inside.
• Galura (need Walse Tower Key): Top floor of the Walse Tower.
• Liquid Flame and Iron Claw (need Steamship Key): The Steamship is still located outside of Karnak - it's now indicated by a re-enterable shrine instead. Liquid Flame is at the end. This leads immediately to the Karnak Escape, and Iron Claw’s location at the end. Can probably be entered after clearing Fork Tower in W3 as well, but you still need the key.
• Sandworm (need Sandworm Bait): Enter the desert to the immediate west of the Ancient Library to trigger this fight if you have the key item.
• Byblos (need Ifrit’s Fire): In the Ancient Library, at the very end.
• Sol Cannon and ArchaeoAvis (need Adamantite): Once you have the Adamantite, you can raise altitude with your airship. This takes you to the Lonka Ruins where you can find both bosses.

• Tyranosaurus: Southwest of the moogle village and the desert areas is a small 3×3 forest. Enter it and talk to the moogle to reveal the underground waterway; the boss is at the end.
• Abductor: At Bal Castle, enter the gate and stand between the two guards, and talk to the one on the left to trigger the boss fight.
• HiryuuPlant: At the end of Hiryuu Valley.
• Gilgamesh 1 (need Anti-Barrier): Enter Exdeath’s Castle and descend to the basement.
• Gilgamesh 2 (need Big Bridge Key): Fought upon the Big Bridge.
• Gilgamesh 3 (need Hiryuu Call): Ride the Hiryuu from your default W2 location roughly southeast to the continent with Exdeath’s castle, then find Xezat’s ship on the east end. Land on it, go down inside, and enter the door on the right and sleep. Go back on deck, talk to Xezat, and this spawns the fight. You may need to go back down and sleep again afterwards in order to be able to leave.
• Atomos (need Submarine Key): Take the Submarine to the southeastern edge of Exdeath’s castle area. You’ll find an entrance to the Barrier Tower underwater here.
• Crystals (need Elder Branch): Fly to Moore and enter the forest to the east; the crystals await at the end.
• Carbuncle, Gilgamesh 4, and Exdeath (need Anti-Barrier and Bracelet): Enter Exdeath’s Castle and head upstairs to reveal its true form. When you reach the trap with the circle of pitfalls, the northernmost skull will teleport you to Carbuncle’s location. A couple floors up, after the save point, opening the lone chest in a large room then trying to proceed further up will trigger Gilgamesh 4. Finally, Exdeath awaits on the top floor. He is mandatory if World 3 is locked, and defeating him unlocks world 3. He is optional if you do not have World 3 locked; defeating him will reduce the first phase of the final boss to 1 HP, and also grant you a choice of 1 of 3 duplicate key items that may unlock additional checks.

The following bosses can (theoretically) be reached from World 3 as well: WingRaptor, Ifrit, Byblos, Melusine, Shiva, HiryuuPlant, Abductor, Odin. LiquidFlame and IronClaw may be accessible as well after the Fork Tower. The four Sealed Dungeons all have a Gargoyle boss outside. These bosses are still randomized, but are very weak, and do not give an item check.

• Antlion: Fly to the south entrance of the Pirate Cave and Boko will appear. Catch a ride around through castle Tycoon, then west past Tule; on the river, you’ll arrive at a canyon that will trigger the boss as you pass through.
• Melusine: In the small 3×3 forest just east of the desert with the pyramid.
• Odin: In the basement of Bal Castle - you don't have to go through the cave, the basement is unlocked. Odin’s encounter still has a 1 minute timer regardless of who is fought there. If you do not have enough time, an NPC on the floor above, by the save point, can extend your timer to three minutes for 50,000 gil. You can fight Odin in World 2 as well, but it shouldn't(?) ever be required to progress to world 3.
• Bahamut: Travel to the Mirage Village (via Mirage Radar) via the very south of the map to board the Black Chocobo, then fly him to the northeast corner and land in the forest next to the large desert. This lets you access North Mountain again, where Bahamut will be waiting at the very end.
• Gogo: Go underwater north of Walse Castle and enter the sunken tower. Note that you are still subject to the 7 minute time limit down here!
• Stalker (need Shrine Page): Found in the Solitary Island Shrine.
• Omniscient and Minotauros (need Elder Branch, defeat Crystals: With Cara in your party from completing Moore, you can enter the Fork Tower. Note that the no-magic and no-phys restrictions of the fights are tied to the bosses themselves, not their locations, so you’ll be free to use normal strategies; you do have to split your party up still though!
• Leviathan (need Falls Page and Submarine Key): Go underwater just south of Istory in order to find the entrance to the Falls dungeon. Grab the “tablet” (not actually a tablet) on the final floor and then walk north to find Leviathan.
• Triton, Neregeid & Phobos (need Trench Page and Submarine Key): Enter the trench that is located underwater, north from Crescent Island.