SMG4 enjoys being around the presence of his friends, going on many zany adventures and fighting great enemies in story arcs. Despite this, they are friends in most episodes, especially in the recent ones. 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. He is a partly amnesiac meme guardian, Mario's closest ally (rival in the War of the Fat Italians series), the de facto leader of his gang, and the former arch-enemy of SMG3. He is also a supporting character in Meggy's Destiny: An SMG4 Movie. He is a major protagonist in Season 1, one of the two main protagonists (alongside Mario) of Seasons 2-8, the deuteragonist of The Waluigi Arc, a supporting character in The Rapper Bob Arc, one of the two tritagonists (alongside Luigi) of Season 9, a major protagonist in The Anime Arc, a major character in Season 10, the deuteragonist of The YouTube Arc and the main protagonist of Season 11, The SMG4 Movie: 10 Year Anniversary Special and the Genesis Arc. Super Meme Guardian 4, more commonly abbreviated as SMG4 and also known as SuperMarioGlitchy4, is one of the two main protagonists (alongside Mario) of the SMG4 series.

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