The X-Buster (エックスバスター Ekkusu Basutā?) is Mega Man X's primary weapon in all games from the Mega Man X series. It is a Mega Buster Mark 17 created by Dr. Light alongside X. X can transform either of his arms into a powerful buster to shoot bullets of compressed solar energy, and has an energy amplifier that allows it to be charged up and release a more powerful shot.