Super Smash Bros. Melee/Sheik

Basic Techniques
Hold A after a stage has been selected (or in single player, during the matchup screen) to switch between Zelda and Sheik before the match starts.

Switching between Zelda and Sheik
An effective Zelda/Sheik game revolves around knowing when to transform. As a general rule of thumb, Sheik is better at racking up damage while Zelda provides the finishing attacks.

Advantages of Zelda

 * 1) More powerful moves, especially Smash attacks.
 * 2) Great aerial attacks (particularly the lightning kick).
 * 3) Greater distance covered with   and less lag.
 * 4) Reflective ability.
 * 5) Long distance projectile Forward.

Advantages of Sheik

 * 1) Quicker moves and movement.
 * 2) Equally great aerial attacks (including a better-than-average sex kick).
 * 3) Better skill with melee weapons (two hits).
 * 4) Great juggling and edge guard techniques.
 * 5) More powerful +.
 * 6) Great attack range, particularly that of smash attacks.

It is also worth noting Sheik is lighter than Zelda.