Scraps

Scraps are a currency earned ingame by killing people and used for various things during a match.

Gameplay
Everyone starts with 3 scraps, and can earn more scraps by killing people at the rate of 1 scrap per kill, although you earn more scraps if you are behind. Scraps are displayed below the player's health and weapon energy bars.

As X

 * X can use the scraps to buy armor parts, at the cost of 2 scraps for the head parts, 6 for the body parts, 4 for the arm parts, and 3 for the leg parts. (15 scraps for a full armor)
 * With all the Light armor or Giga Armor parts, X can perform the Hadouken and the Shoryuken techniques respectively for 3 scraps.
 * From 5.0 to 6.7, X could refill weapon energy for 3 scraps by pressing the special button.
 * X, with a fully equipped Max armor, can spend 10 scraps to upgrade it into the Gold Max Armor.

As Zero

 * Zero can transform into Black Zero for 10 scraps.
 * From 9.0 onwards, Zero can use his Z-Buster for a price of 1 scrap per shot.

As Vile

 * Before 9.0. if Vile's ride armor was destroyed, he could call a new one for 10 scraps.
 * After 9.0, Vile can summon a new ride armor for 5 scraps, but only once per life.
 * That same update also introduced Vile MK-II, a transformation for Vile after he dies, costing 5 scrap.
 * From 9.0 up to 9.9, players could respawn as MK-II Vile with the Goliath Ride Armor at the cost of 10 scrap.
 * 10.0 changed the cost of Goliath to 10 scrap after Vile becomes MK-II Vile, effectively increasing its cost to 15 scrap.

As Axl

 * Axl needed 3 scraps to use a transformation.
 * If disguised, Axl can use the Assassination ability introduced in 10.0 at the cost of 1 scrap.

Trivia

 * Scraps may be a reference to Vile's catchphrase in X1: "You worthless piece of scrap metal, did you think you could defeat me?"
 * On the 3.0, X could Refill ammo with 3 of scrap, however, this was confusing for some players