Marx is one of the Unlockable Characters for Super Smash Bros. Ragnarok. The trickster from Popstar, Marx like others before and after him desired ultimate power. In Marx's case he gained this through the mysterious entity known as Nova, but in the process Marx lost his mind and his sense of reason, resulting in him becoming becoming an almost unstoppable creature. Though he has been resurrected his powers have been diminished greatly as there wasn't much left of him from his fight with Kirby.
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.