X

X is the main antagonist of the Zero X Axl series. He is also the main protagonist of Capcom's Mega Man X series.

Story
Zero X Axl

After learning of Zero's friendship with Axl, X is enraged and feels betrayed. X joins the ranks of Sigma, to lead a new life and possibly kill Zero. After Zero kills Sigma, X escapes with Vile.

Zero X Axl 2

X repaires Sigma and Sigma conjures a new plot to kill Zero and Axl and forms the Z-Hunters. After Sigma is once again defeated by Zero, X and Vile escape for the second time.

Zero X Axl 3

X repairs Sigma once again and Sigma forms his final plan to kill Zero and Axl. After Zero fights his way to Sigma, Sigma escapes and leaves Zero to X. X nearly kills Zero, but Sigma steps in and critically injures X (Due to him thinking that Zero should be his to kill). Zero defeats X and in his last seconds, he forgives Zero for what he did. Sigma is later captured.

Abilities
X is quite powerful, as he uses smart tactics and makes the best out of his limited abilities. His main weapon is the X-Buster, similar to the Z-Buster , but can only go up to a four-level charged shot rather than five-level. He can also equip the weapons of defeated bosses onto his X-Buster. He, like Zero and Axl, has a dash ability.