Multi Moons are collectible items in Super Mario Odyssey. Equivalent to the Grand Stars in Super Mario Galaxy and Super Mario Galaxy 2, they are usually collected after completing a level with a boss (with the exception of Bowser) or another story-related mission. They count as three Power Moons when powering up the Odyssey, although they are only counted as one on the list of Moons in a kingdom. Like the Power Moons, the Multi Moons are given specific colors depending on the kingdom in which they are found. Collecting a Multi Moon will teleport Mario back to the Odyssey.
Big Pot on the Volcano: Dive In! (Luncheon Kingdom) - Obtained from capturing a slab of meat and having Cookatiel take it up to the pot on the top.
Cookatiel Showdown! (Luncheon Kingdom) - Obtained from defeating Cookatiel.
Battle with the Lord of Lightning! (Ruined Kingdom) - Obtained from defeating the Ruined Dragon.
Showdown at Bowser's Castle (Bowser's Kingdom) - Obtained from defeating the RoboBrood.
Tussle in Tostarena: Rematch (Mushroom Kingdom) - Obtained in a rematch with Knucklotec.
Struggle in Steam Garden: Rematch (Mushroom Kingdom) - Obtained in a rematch with Torkdrift.
Dust-Up in New Donk City: Rematch (Mushroom Kingdom) - Obtained in a rematch with Mechawiggler.
Battle in Bubblaine: Rematch (Mushroom Kingdom) - Obtained in a rematch with Mollusque-Laceur.
Blowup at Mount Volbono: Rematch (Mushroom Kingdom) - Obtained in a rematch with Cookatiel.
Rumble in Crumbleden: Rematch (Mushroom Kingdom) - Obtained in a rematch with the Ruined Dragon.
Arrival at Rabbit Ridge! (Dark Side) - Obtained after defeating all four Broodals and RoboBrood.
Long Journey's End (Darker Side) - Obtained after completing the final level and climbing to the top of the tower.
Multi Moons feature a different color depending on the kingdom in which they are found. Their color also matches the color of the kingdom's Power Moons and the pole of the Kingdom's Checkpoint Flag. Like Power Moons, after they are collected, they lose their color and appear translucent the next time they are collected. The Multi Moons in the boss rematch paintings, Dark Side and Darker Side are the only ones that can be collected again.
Multi Moons were originally called Grand Moons during the E3 playthrough.
White is the only Power Moon color to not represent a Multi Moon.
Unlike normal Power Moons, the victory animation will still play if an already-grabbed Multi Moon is collected again.
As of the version 1.2.0 update with Luigi's Balloon World added, the already-collected Multi Moon no longer appears in front of Mario and Cappy on the screen in the victory animation.