The Shuigang Helicopter (Shuigang Chopper) is a helicopter piloted by a Shuigang Soldier, the mid-boss of Sky Battalion's fire ship, alongside Spade (earth ship) & Penguin Blaster (metal ship).
One of these helicopters is seen in the opening cinematic defending against Lord Brevon's forces and is subsequently destroyed. Several more are seen in the Dragon Valley intro cinematic shooting Torque's ship down. There are also a few flying in the background in Dragon Valley.