Void Marshal

 is a gun that fires fast-moving lasers.

Trivia

 * If the player has The Emperor, it causes an unknown effect.
 * This is likely a reference to Han Solo's gun from Star Wars: Episode IV – A New Hope, with The Emperor likely referencing Emperor Palpatine.
 * The Pilot appears to be carrying one on his boss fight opening screen and most promotional art for the game.
 * This gun is one of the six guns wielded by the Beholster.
 * This gun is also a reference to the gun wielded by the Artemis Class Biomech in Void 1.1.