Hint: Diablo's moves:
Pulverizer: Hold 1 + 2, then press Up, Down when over opponent's head.
Teleport: Hold 1 + 2, then press Up, Down.
Stomp on opponent: Hold 1 + 2, then press Down, Up.
Breathe Fire: Hold 1 + 2, then press Up, Forward.
Fireball: Hold 1 + 2, then press Down, Forward.

Hint: Armadon's moves:
Shield: Hold 1 + 2, then press Down, Up.
Fireball: Hold 1 + 2, then press B, B, B.
Throw: Hold 1 + 2, then press B, Forward (close to opponent).
Shells down: Hold 1 + 2, then press Up, Up, Down.

Hint: Chaos's moves:
Charge: Hold 1 + 2, then press Forward, Forward.
Fireball: Hold 1 + 2, then press Up, Down.

Hint: Sauron's moves:
Ground pound: Hold 1 + 2, then press Up, Down.
Uppercut: Hold 1 + 2, then press Up, Down.