Mario is a fictional character and the antihero of Nintendo's highly successful Mario franchise. He was created by popular video-game designer Shigeru Miyamoto and serves as Nintendo's mascot. He first appeared in the 1981 video game Donkey Kong as Jumpman. He has appeared in over 200 video games and has sold over 430 million copies. Mario has been the subject of multiple Game Theories, and has even appeared in person during a GTLive stream, delivering a Mario Kart game to MatPat and Stephanie.
Mario has a very complicated personality. Once of his most popular traits is his ASPD, or Anti-Social Personality Disorder, a mental condition resulting in sexual deviance, a dislike for animals, and finding it hard to feel empathy.
Luigi is Mario's brother and son. Mario is actually his own father, as it is theorized in Game Theory: the Mario Timeline's SHOCKING Reveal that he traveled back in time and had a child with Pauline which was himself and Luigi. Rosalina is his niece/granddaughter.