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

Princess Peach - Super Mario Wiki, the Mario encyclopedia

Pikachu - SmashWiki, the Super Smash Bros. wiki

Rumour: Super Smash Bros Full Character Roster Apparently Leaked - My Nintendo News

06/20/14 - Pixelated Fruit - Feature - Nintendo World Report

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

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

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

Evolution of a tier list part 1 - Super Smash Bros. 64 had a tier list that took the longest to develop compared to other games in the series

Pikachu, Smashpedia