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

Sonic is a character from SEGA who appears in Super Smash Bros. Brawl as one of the two third-party characters. Sonic was the first unlockable character to be playable prior to the game's release, first playable in Nintendo Media Summit in October 2007
Sonic is a character from SEGA who appears in Super Smash Bros. Brawl as one of the two third-party characters. Sonic was the first unlockable character to be playable prior to the game's release, first playable in Nintendo Media Summit in October 2007

Ness, Wii Wiki

Super Sonic, Smashpedia

List of fighters debuting in Super Smash Bros. Ultimate - Super

Incineroar (Super Smash Bros. Ultimate), Smashpedia

Sonic (SSBU)/Forward aerial - SmashWiki, the Super Smash Bros. wiki

Super Smash Bros. - Super Mario Wiki, the Mario encyclopedia

Super Smash Bros. Brawl - Wikipedia

Mario (SSB4) - SmashWiki, the Super Smash Bros. wiki

Super Smash Bros. Brawl/Sonic — StrategyWiki

Kirby (SSBU) - SmashWiki, the Super Smash Bros. wiki

Assist Trophy - Super Mario Wiki, the Mario encyclopedia

Franchise Festival #40: Super Smash Bros. – The Avocado

Sonic (SSB4)/Forward tilt - SmashWiki, the Super Smash Bros. wiki

Sonic (SSBU) - SmashWiki, the Super Smash Bros. wiki