Marx

Marx is a character from the Kirby series, who made his debut as the final boss of the "Milky Way Wishes" game in Kirby Super Star. He appears as a boss in Super Smash Bros. Ultimate, appearing as the final enemy in the Classic Mode run of Kirby, Princess Rosalina & Luma and Inkling. He also appears as a boss in the adventure mode, World of Light.

Previously, before his Super Smash Bros. Ultimate appearance, his boss battle theme from Kirby Super Star ("Vs. Marx"), appeared as a remix in Super Smash Bros. Brawl and Super Smash Bros. for Wii U. It could be played on Halberd.

Trivia

 * The final boss of Super Smash Bros. Brawl, Tabuu, had similar moves to Marx.