FFX Bosses

• Chocobo Eater: A huge beast that dwells on the Mi'ihen Highroad.
• Sinspawn Gui: A large monster that was created from the fusing of different sinspawn.
• Spherimorph: A trans-elemental fiend that lives in a spring in Macalania Woods.
• Crawler & Negator: Crawler is basically a giant machina gun, and Negator is a machina that stops you from summoning and using magic.
• Seymour Guado with 2 Guado guardians, and later Anima.
• Wendigo: An ogre that has been enslaved by the Guado.
• Evrae: The Guardian Wyrm, protector of Bevelle.
• Seymour Natus & Mortibody
• Evrae Altana: Evrae, now a resurrected zombie.
• Defender X: A huge machina.
• Biran and Yenke: Old Ronso enemies of Kimahri at Mt. Gagazet.
• Seymour Flux & Mortisorchis
• Sanctuary Keeper: One of the two guardians of Zanarkand.
• Spectral Keeper: The second guardian of Zanarkand.
• Yunalesca: The undead summoner, first conqueror of Sin.
• Sin
• Seymour Omnis: The last battle with Seymour.
• Braska's Final Aeon: Sometimes considered the last real battle in terms of difficulty, although others follow.
• Sin Aeons: The player's aeons are possessed by Sin and must be defeated.
• Yu Yevon: The last battle in the storyline.
• Dark Aeons
• Nemesis
• Penance (appears after all the dark aeons are defeated): The most powerful boss in the game. 12,000,000 hp. Reward: 100,000 AP. Only appears in Final Fantasy X: International version.
• Ultima Weapon (in Omega ruins, found before Omega Weapon): A shadow, born from Omega's wrath.
• Omega Weapon (in Omega ruins): The extremely powerful soul of Omega, traitor to Yevon.