Kingdom Hearts/Secret Bosses

Ice Titan
Fought in the Olympia Stadium, the Ice Titan isn't as hard a fight as it is long. His attacks follow in a pattern that is pretty consistent. Fighting him may take some time, but it isn't a total challenge. For a start, you must have the Guard ability equipped. When the battle begins, the Ice Titan will release a stream of icicles at you. Time your Guard well to deflect the icicles back at it to deal some damage. Never cast Aero magic in this battle as it will cause the icicles to become too big to deflect. When you have dealt enough damage from the deflected icicles, the Ice Titan will fall to its knees.

Quickly run up to it and whack its head as much as you can (e.g. using Ars Arcanum or Ragnarok) before it stands up. One of its attacks involves it hitting the ground and icicles spring out from it. Either run or Dodge Roll to avoid damage. Another attack involves it raining down energy balls. Again, run or dodge roll. When its health bar reaches a certain stage, it will use a more powerful attack: It will deep-freeze you for quite a hefty damage. Experienced players can roughly predict when it will use this attack. But if possible, run to the side of the stadium (where the stairs are) to avoid its freeze.

Phantom
Fought in Neverland, if we come back there near the end of the game (you will notice that the Clock Tower is inaccessible from the World Map). Head to the room where Tinkerbell is and talk to her to get to the Clock Tower. Peter Pan must be in the party, because only he can understand the pixie. The battle is hard for two reasons: summons cannot be used and the Phantom uses a curse that kills your party members one by one when the clock strikes 12 (and no, Cure magic doesn't work on them). To stop the countdown and buy some time, cast Stop magic on the clock face (but it works temporarily).

Cast Aero magic to reduce damage (or if you have MP Rage and the since Phantom deals quite a lot of damage, you can easily recover MP fast), since MP is crucial in this battle. The Phantom has a "heart" that glows in different colours, indicating what magic you should cast on it.


 * Red → Fire,
 * Yellow → Thunder,
 * Blue → Blizzard,
 * White → Physical attack

Now, you can either rely on Donald to Cure the party (if lucky enough to strike the Phantom with the right magic)when your MP is low, or rely on Goofy if he has the MP Gift ability to provide you with MP when needed. In a nutshell, this battle requires patience and having to keep a look-out on the clock face to stop it from moving when needed.

Kurt Zisa
Fought in Agrabah, if you come back there near the end of the game. You must go to Aladdin's room and take issue from the Flying Carpet.

Sephiroth
Fought in Olympia Stadium in the Platinum Cup. Sephiroth is seen as the hardest boss in Kingdom Hearts (original version, not Final Mix). After his HP meter reaches pink, he uses Sin Harvest attack, which reduces HP to 1 and MP to 0 and rush on you with a following attack. If he teleports close to you, you can cancel the attack by hitting him. If he is too far from you - run as far as possible and use an elixir (you have very little time to do it). After his HP meter reaches orange, he starts using an annoying chain of flying attacks. After his HP meter reaches green, he starts using Meteor (you cannot damage him during the animation) and attacks you with orbs of dark energy.

Enigmatic Man (Final Mix only)
The hardest boss in Final Mix. He attacks in the same way as Xemnas in Kingdom Hearts II and is found in the room in Hollow Bastion where you fought Maleficent Dragon.