Oh boy oh boy.

PRE BATTLE PREPS:

-LOTS OF ELIXIRS on auto replace.
-Glide Lv3
-Maybe even Air dodge as it might help avoid em
-Ultima Weapon


Ok in the first 1 second YOU MUST PRESS TRIANGLE! (reaction)
and do this everytime the reaction command appears.

Or ull lose a crap load of life. then once he starts to gte up from his attack immediately with Trinity. Then attack and avoid his attacks. When he goes into a dark ball, LOCK ONTO him and watch him.

If he ever rises into the air u have to try and knock him down using anything (even a fire spell) if you don't u will lose all your life and you will have to use an elixir.

Basically:
-Avoid
-Trinity
-Avoid
-Attack now and then
-Reactions
-Elixirs
-
If he uses metoer then just fly around and hope not to get hit.

It is a pretty easy battle compared to KH1's and Trinity takes about 1 life bar everytime and he has like 8.