Zero is one of the Unlockable Characters for Super Smash Bros. Ragnarok. Originally created by Dr. Wily, Zero was built with the purpose of taking down Mega Man, although was sealed for hundreds of years and surpassed his programming allowing him to fight alongside Mega Man's successor, X against a new threat known as the Mavericks which were accidentally caused by Zero. Zero is incredibly well-versed in Melee and Ranged Combat and is capable of using numerous attacks to out manuever his opponents.
A new feature in Super Smash Bros. Ragnarok, pairing has a secret ability in which if both characters perform Final Smashes together. Every Character has a partner that gives both Final Smashes a 5% Damage Boost when performing a Paired Smash.