What is the last name of Mario and Luigi?
The surname “Mario” (which would make his full name Mario Mario) was first used in The Super Mario Bros. Super Show, and then in the 1993 feature film Super Mario Bros. This was meant to explain how both Mario and his brother Luigi could be known as the “Mario brothers”. This surname theory has never been employed in any official Nintendo games or media, however, and it is broadly accepted that Mario and Luigi are collectively called the Mario Bros. simply because Mario is the headliner of the pair.
