Mario is arguably the main character of EMB, or Epic Mario Bros. He has appeared in the majority of the episodes, and is often accompanied by his younger brother Luigi. Mario can be a bit arrogant at times, and can be a jerk. But when a problem arises in the Mushroom Kingdom, Mario is there to help, no matter the situation. He also is seen to possess fire powers, which he accessed from his own anger in the episode Mario's Anger. Mario has also appeared in every Movie and every Mario and Luigi's Boring Adventures episode.
History
Mario was born in the Mushroom Kingdom. His parents are unknown, however, he is related to Luigi. When he was young, he lived on Yoshi's Island with the Yoshis. Mario often fought against Baby Bowser during this time. When Bowser from the future traveled back in time, Mario and Luigi set off to the castle in the sky. Along the way, they meet with their future selves to defeat Bowser and Baby Bowser. Not much is known between this time and 20 years later when the EMB series officially begins. Here, Mario has a house and is deemed hero and savior of the MushroomKingdom, though most of his fame is lost to history. It isn't until when Bowser returns with his evil ways that Mario has to spring back to action. Mario makes his way through many misadventures and shenanigans during the first season of EMB. He even becomes a cop when Bowser Junior robs the bank. Later, the Wario brothers make their arrival in the Mushroom Kingdom, when Mario and Luigi head into the sewers in search for Luigi's hat. Mario also returns to being a cop one last time when Wario strikes again. In 2014, Philox's army invades and Mario must save the day again. He risks his life taking down Philox and his mothership. When Season 3 arrives, Mario once again returns to his ways of enduring misadventures. This lasts until he is sucked into another world, the Leafy Kingdom. Here, Philox is planning to destroy the Mushroom Kingdom once again. This time, Mario manages to defeat Bowser three times and even takes down the new mothership. He also enters the Creator's Realm and survives the Creators. In Season 4, it's back to shenanigans. Through this, he manages to stop Wario's evil schemes and unlocks his anger powers, fire. Wario returns later on, though Mario ultimately defeats him in a final dual. Shortly after, he is met with an 8-bit version of himself, who claims to be the Overseer. The Overseer tells Mario a great evil Koopa is rising; referencing Boom Boom. When Boom Boom arrives, a massive battle ensues at Mario's house. With the help of the Overseer, Bowser is destroyed and Boom Boom is put to an end. Season 5 finally begins and Mario faces off against new aliens, Pokemon, and even a golf game.