Spike Ball

Spike Ball, also known as Spike Rope (スパイクロープ) in Japan, is what X gains from defeating Axle the Red. In normal mode, it shoots out a green thorny ball of vines that goes a short distance, then returns to X. Charged up, it sends a purple spiked ball that ricochets around the room. 

Counterpart to this Weapon

 * Twin Dream