Billy is the only character in the game that fights with guns. He has three types of guns: a Handgun, used for his Triangle Button attacks; two Ether Guns, used for his Square Button attacks; and his Shotgun, used for X Button attacks.

   Each gun can -- and must be -- equipped with ammo. To do so, go to Billy's Equip screen and then push right. A new box will come up that allows you to change the ammo for each of the four guns (Handgun, Ether Gun Left, Ether Gun Right, and Shotgun). You can also equip new Handguns from the normal equip screen. The Ether Guns and Shotgun themselves never change, just their ammo.

   During battle, whenever you push Triangle or X, Billy will fire the corresponding gun, using its attack power to calculate the damage, and consuming one bullet (each ammo clip holds 100 bullets). The Ether Guns never run out of ammo, however. Also, since Billy has two Ether Guns, which one is fired is determined by whether this is an odd or even attack. If you hit Square, Billy will use his first Ether Gun, but if you hit Triangle and then Square, Billy will use his second Ether Gun. This is important, because the Ether Guns always do elemental damage, and you want to use the right element of attack! Also, in easy areas where you don't want to waste ammo, use the Ether Guns, since they use no ammo.