Mario is the mascot of Nintendo and the main protagonist of the best-selling video game franchise of the same name. He has appeared in every Super Smash Bros. game as a playable character, along with several characters and stages from his series.
The Legend of Zelda is one of Nintendo's flagship franchises, featuring action-adventure games with a fantasy setting and a recurring hero named Link. The series has been represented in every Super Smash Bros. game by Link and other characters and stages from various games.
Pokemon is a media franchise that spans video games, anime, manga, trading cards, and merchandise, involving the capture and training of creatures called Pokemon. The franchise has been featured in every Super Smash Bros. game by several playable characters, stages, items, and assist trophies.
Metroid is a science fiction video game series that follows the adventures of Samus Aran, a bounty hunter who fights against the parasitic Metroids and the evil Space Pirates. The series has been represented in every Super Smash Bros. game by Samus and other characters and stages from various games.
Donkey Kong is a gorilla who debuted as Mario's rival in the arcade game of the same name. He later became the protagonist of his own series of platformer and spin-off games, featuring his family and friends. He has appeared in every Super Smash Bros. game as a playable character, along with other characters and stages from his series.