Game:Peter Pan

Peter Pan makes his first appearance as a boss in Kingdom Hearts Birth by Sleep. He is fought in Terra's storyline in Neverland due to Captain Hook's trickery. The devious pirate ensures that the battle takes place by tricking Terra into thinking that Peter Pan is stealing light from the treasure box.

Strategy
Peter Pan is a rather easy opponent. For the most part, he flies around the arena occasionally diving to stab Terra with his dagger (his only move). Simply dodge this weak attack and strike Peter when he's low enough to hit. The Sonic Shadow Shotlock is a good choice for this battle as it can do lots of damage. Alternatively, if you start bashing on him from the beginning of the battle and manage to get the timing right to give him no break, you can beat him without him ever attack you in return. Just dodge his stabs and attack with proper timing until Peter is defeated (the battle will end before you'll be able to finish him).