Mario – He’s the protagonist and while he may not be the nicest, he’s not always the smartest.
Luigi – Mario’s Brother. Luigi is mostly known as being the stupid character, being in a viral video and getting married to an action figure.
Bowser – He started out as friends with Mario and Luigi, but their friendship will soon crash.
Bowser Junior – Bowser’s son. He can sometimes be a troublemaker, but he’s basically your average kid.
Pennywise – Junior found Pennywise in a nearby sewer and ever since, he’s been living in the house.
Yoshi – Yoshi was originally a crazed Mario fan and a professional player at Guitar Hero, but eventually became a therapist.
Kamek – One of Bowser’s minions. His magic wand helps him with lots of cool powers. He’s one of Bowser’s main minions since his wand is capable of many things, like teleportation, invisibility, and wishing.
Larry – Larry is one of Junior’s brothers. He’s mostly one of the calmest brothers, as he just likes to have fun. He loves pranks, video games, and battling.
Koopa – Koopa the Quick or “Koopa” is known as the fastest koopa. Mario originally beat him until he cheated to beat Mario again. He has a very big ego and likes to brag.
Iggy – Iggy is one of Junior’s brothers. He’s pretty energetic and loves screwing things up. He also annoys his brothers, which is why he’s not very liked by them.
Lemmy – Lemmy is one of Junior’s brothers. He likes playing with toys, specifically toy balls. I know what you’re thinking.
Roy – We’ve got a little troublemaker in the house! Roy Koopa escaped from jail to go work with Bowser and now he has enough power to make Mario and Luigi extinct! Or does he?