Rosalina is one of the Unlockable Characters for Super Smash Bros. Ragnarok. The leader of the Lumas, Rosalina resides over the Comet Observatory, flying through the cosmos observing many events over her lifetime. When Bowser planned to take over the Galaxy however, she aided Mario in stopping the King Koopa and his plans.
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.