SMG4 is a (usually) sane person with an intense love for memes and YouTube. SMG4 has been passionate and protective of his work; that aside, he seems to play the sane man who is often annoyed or shocked by Mario's crazy, flamboyant idiocy. Despite this, they are friends in most episodes, especially in the recent ones. SMG4 enjoys being around the presence of his friends, going on many zany adventures, and fighting great enemies in story arcs. SMG4 has a brother-like friend named SMG3.