Deadly Crescent is one of the penultimate bosses from Darius Gaiden. It is based on a Mirror dory.
Deadly Crescent's main for of attack is to throw it's dorsal fins at the player, which spin around before returning to it like a boomerang. Shooting them will deflect them backwards while the Silver Hawk's shots also get deflected as well. It's other attacks include a series of upwards arcing lasers and a stream of bullets, often used in conjunction with the fins. After the fins are destroyed it will start to shoot homing lasers, as well as releasing small floating blobs from it's mouth.