The Mirror Shield is Pit's Down Special Move in Super Smash Bros. Brawl. When using it, Pit takes out a shield that reflects projectiles and prevents any damage done in front of him. As long as the attack hits the shield Pit will not be damaged by it, even in the case of explosives and some Final Smashes. The reflected projectile does more damage than it would originally, and some will even be accelerated, similar to how Wolf's Reflector works. The Mirror Shield is Pit's fastest reflector against projectile attacks. However, the Mirror Shield is also very good protection against an attack that has a startup lag, such as Captain Falcon's Falcon Punch or most forward smash attacks. Unlike other Reflectors, Pit actually says "Nice Try!" whenever he reflects a projectile.
Pit will put his shield away after about 15 seconds if the button is held.
Tilting the control stick upwards while holding B will aim the shield at an upward angle (circa 45°). This usually has no effect on the reflection, but interestingly, you can actually block Samus's Zero Laser Final Smash by angling the shield up at the correct distance. This blocks all hits except for the final one.
Pit's shield can be used to block Tabuu's Dragon Laser. Pit won't take damage but he will be pushed back.
It can also reflect Ridley's wind attack. This will damage the boss, and Pit will not be pushed back.
If a Poké Ball hits Pit's Mirror Shield before the Pokémon is released, once the Pokémon comes out, it will act as if the player who was Pit had thrown it and will not be affected. He can also block Link and Toon Link's Final Smash with this.
The Mirror Shield is one of the three sacred treasures Pit needed to defeat Medusa. It is based on Greek mythology, where a mirrored shield is used to defeat Medusa by looking at her reflection in it rather than her.
- In Super Smash Bros. for Nintendo 3DS and Wii U, the Mirror Shield was replaced with the Guardian Orbitars as Pit's down special; however, the Mirror Shield still made an appearance in Pit's Final Smash in which he uses the Three Sacred Treasures.