Certain nobodies such as the berserker and the samurai
you just keep hitting them like all the other enemies and monsters.
In Kingdom Hearts Birth by Sleep, the main enemies are called Unbirths. I believe they are controlled by Master Xehanort or Vanitas.
Items are found in chests, won as awards, dropped by enemies and can be bought in the Moogle Shop.
You defeat the four black enemies (whose names I cannot recall), and the Leech Grave will fall. Take this opportunity to attack, then repeat.
Defeat Sephiroth.
What boss.
there is a great guide at supercheats.com
The main enemies are the heartless and the bug blox.
Sephiroth is an extremly powerful enemy. he is the drak side of cloud basically. In kingdom hearts you can defeat him in the collusem but only cloud can truly defeat him.
it depends on which one they are.
You have to hit its hands.
you suck there ear