The Boomerang is a weapon in Black Paradox.
Projectiles fired from this weapon are rapidly spinning medium-sized boomerangs with a maximum forward travel distance of about half the screen. At that point they will stop and travel in reverse back towards the player character's then-position, continuing past the character, and traveling off the left side of the screen, always dealing damage to any enemy or object with which they come into contact. This allows the player to attack enemies located behind Black Paradox, and, if aimed correctly, can hit a single enemy multiple times before terminating.
Player movement is not slowed while holding the Fire button.