Star Crash

The Star Crash (スタークラッシュ) is Star Man's Special Weapon in the Mega Man series. This weapon creates a star-shaped energy barrier that rotates at high speed around the user for protection, and it can be thrown at enemies in the direction the user is facing, being useful for both offense and defense. It improves on the previous Leaf Shield and Skull Barrier by being able to protect the user from projectiles and be able to be thrown.

Mega Man 5
The Star Crash does not use Weapon Energy when activated, using 3 weapon energy units if the shield is hit while protecting the user or 2 units if it's thrown, and can still be used if less than the amount of energy required remains. With a full weapon energy gauge, Mega Man can shoot it 14 times or use it as a shield 10 times.

Star Crash can resist only one hit, but excluding shots fired by Dark Man 4, it can protect against every enemy bullet in the game. It is the weakness of Gravity Man and the Wily Press, and is somewhat effective against Dark Man 4 anyway.

Mega Man (Game Gear)
Star Crash is Bright Man's weakness.

Damage Data Chart
Damage values in units in Mega Man 5.

Mega Man (Ruby-Spears)
Mega Man uses the Star Crash in the episode Curse of the Lion Men. In the cartoon, its chamber is shaped like a star, probably to generate the energy stars. Unlike its game of origin, it does not create a barrier but rather fires star-shaped blasts.

Mega Man Megamix
In the manga, the Star Crash (named Star Barrier in the Japanese version) creates a small gravitational field centered around the user. It not only acts as a defensive barrier, but can also be release towards opponents as an attack. The Star Crash is very resistant, being able to endure attacks from Bass and the Stardroids. It is only seen when used by Star Man, mainly to protect himself and his allies.

Rockman 5 (manga)
As Star Man is the last of the eight robots defeated by Mega Man, the Star Crash is only used when he attempts to attack Circling Q9 with several weapons, with none of them being effective. During the rematches, the Star Crash is the only weapon not used by Mega Man, as he uses Crystal Eye against Gravity Man and Napalm Man.

Trivia

 * In an early Japanese preview of Mega Man 5, Star Crash spawned only one star rather than three, and it would home in on targets.