Giga Bowser

Giga Bowser is a massive form of Bowser. Although he is a variation of a Mario character, Giga Bowser is unique to the Super Smash Bros. series, and serves one of the following purposes:
 * Giga Bowser (boss) - A boss fought at the end of Adventure mode in Super Smash Bros. Melee and during the World of Light in Super Smash Bros. Ultimate.
 * Giga Bowser (Final Smash) - Bowser's Final Smash in both Super Smash Bros. Brawl and Super Smash Bros. for Nintendo 3DS / Wii U.
 * Giga Bowser Punch - Bowser's Final Smash in Super Smash Bros. Ultimate, where he transforms into Giga Bowser to punch his opponents.