Pikachu (PM) - SmashWiki, the Super Smash Bros. wiki

Pikachu is a playable character in the Brawl mod Project M. For its appearance in Project M, it was mostly reverted to its Melee version, while keeping a few techniques and moves from its Brawl and Smash 64 versions. Pikachu ranks 23rd out of 41 on the official tier list, close to the bottom of B tier

Pikachu (SSB) - SmashWiki, the Super Smash Bros. wiki

Ness (PM) - SmashWiki, the Super Smash Bros. wiki

Mewtwo (PM) - SmashWiki, the Super Smash Bros. wiki

An overview of ALL Nintendo IP in Super Smash Bros – Source Gaming

Pikachu (SSBU), Super Smash Bros. Fanon