Zero is a main protagonist from the Megaman X series. He is a Reploid and final creation of Dr. Wily as an attempt to succeed Wily's rival, Megaman but for reasons unknown was sealed away likely due to a malfunction or savage nature. Originally harboring a cognitive error that of a rogue maverick, his alignment changed since his encounter with Sigma to which he lost. Due to a change in morality he'd eventually be enlisted as a Maverick Hunter due to his combat potential and since then he'd help quell rogue mavericks from threatening humans and Reploids alike.

Zero is a fairly built Reploid resembling a human sporting red and white sleek armor with yellow trims in areas as well as a helmet with a blue gem on the forehead. One notable trait is his blonde hair about the length of his body in a ponytail. He even has a yellow beam saber often sheathed over his shoulder.

As a Reploid he's capable of feats like dashing with the thrusters in his leg armor, has high endurance as well as a strong tolerance to the Maverick Virus that was originally merged with his programming making him not immune but gain slight power when in contact. He's also a master of utilizing his beam saber in combat, able to manipulate energies through it such as ice, fire and electricity based on data gathered from certain defeated Mavericks.