This is a visual and gameplay modification for Super Smash Bros. Brawl, and Project M. The mod in question is an overhaul of a character to fit with Smash 3/3C characters. The Smash 3 Project is a visual redevelopment of Brawl with the goal of bringing Smash 4's visual style to Brawl. Smash 3C is a continuation of the previously mentioned project.

Full album: http://imgur.com/a/73K6A
The Smash 3 Project: https://smashboards.com/threads/thes...
The Smash 3C Project: https://smashboards.com/threads/thes...

Knock, knock. It's red Sonic.