Let's say you have a Machinegun (ammo used = 1, ammo drop size = 32) and your other weapon is a Double Shotgun (ammo used = 2, ammo drop size = 8), then: (Ammo used per shot/Mini Ammo Chest size for the weapon you are firing) × ½.The chance per shot to receive ammo for the other weapon (the one you are not firing at the moment) equals: The amount gets rounded up for bolt weapons. Bullet weapons would get +16 ammo, shell weapons would get +4 ammo, etc. The amount of ammo you can receive per shot is equal to a half of a Mini Ammo Chest pickup. This mutation doesn't work if you have at least one melee weapon that doesn't use ammo. This is more likely to occur when both weapons are being fired at once. The chance and amount of ammo you receive depend on what type of weapons you have - mainly how much ammo they use per shot and how much ammo they receive from Mini Ammo Chests. Throne Butt Firing with your primary weapon may add a small amount of ammo for your secondary weapon and vice versa.

The button used to activate special abilities is used to fire his secondary weapon. Special Steroids dual wields his weapons, allowing him to shoot and reload two weapons at the same time.

Holding down the fire button will fire/swing the weapons constantly as they reload automatically. In addition, all weapons used by Steroids are fully automatic, including melee weapons. These weapons include the crossbow, heavy crossbow, laser cannon, golden laser pistol, golden grenade launcher, and most melee weapons (that is, excluding shovels and screwdrivers). It's also worth noting that because this effect is a multiplier and not a flat increase, guns with perfect accuracy are not affected. Steroids' base inaccuracy rating is 1.8 (up 0.8 from 1 for all other characters), resulting in 80% more inaccuracy when firing. With weapons that have spread, the spread will be wider. If Steroids starts with a Golden Weapon in his primary weapon slot, he will have some ammo for it and 64 bullets for the Revolver in his secondary weapon slot.

Features Steroids starts with a Revolver in both primary and secondary weapon slots and 160 bullets instead of 96.

Nuclear throne rebel b skin hoodie