Super Smash Brothers Melee - Wonder Melee Gods unite! & Westballz also featuring Leffen from Melee Gods May Cry

They’re all competitive Melee players (aside from the yellow happy face), to put it bluntly. The one that you're comparing the Just Do It guy (or Shia LaBeouf) to is known as Hungrybox. He plays Jigglypuff, and is very well known for being one of the best, if not, the best Jigglypuff player in the community.