The Final Battle

Spirits

 * Midna
 * Tetra
 * Little Birdie
 * Jeanne
 * Dr. Eggman
 * Balder
 * Seliph
 * Tails
 * Mumkhar
 * Dark Mind
 * Yarn Poochy
 * X
 * General Pepper
 * Zero (Zero Buster)
 * Nash
 * Thanatos
 * Magnus
 * Isaac
 * Rouge the Bat
 * Mother Brain
 * Kaptain K. Rool
 * Guile
 * Starly
 * Naked Snake
 * Shanoa
 * EVE
 * Mipha
 * Baby Mario
 * Garon
 * Octoling Octopus
 * Pigma Dengar
 * Young Samus
 * Chibi-Robo
 * Giga Mac
 * Takumi
 * Ball
 * Madama Butterfly
 * Bowser (Wedding)
 * Claus
 * Hinawa
 * Peach (Wedding)
 * Arceus
 * Lunala
 * Fierce Deity Link
 * Solgaleo
 * Mythra

Captive Fighters

 * Roy
 * Dark Samus
 * Bayonetta
 * Palutena

Boss Fights

 * Master Hand
 * Crazy Hand
 * Galeem (One Bad Ending)
 * Dharkon (One Bad Ending)
 * Galeem and Dharkon (True Ending)