Wait, Mario & Luigi Are Twins?

Mario and Luigi are perhaps the most famous brothers on the planet, but it may come as a surprise to learn that the Mario Bros. are the Mario Twins.

Luigi - MyWaifuList

Why are so many people surprised to learn that Mario and Luigi are twins? - Quora

10 of the Best 1st Birthday Party Themes for Twins - Twiniversity

Luigi (The Super Mario Bros. Movie) - Incredible Characters Wiki

Super Mario Adventures: Boo Chaos! - Chapter 3: Luigi, Boos and Mr. L?! - Wattpad

The Super Mario Bros. Movie: 9 Mario & Luigi origin facts

I Literally Just Learned Five Seconds Ago That Mario And Luigi Are Twins

MLSS Mario and Luigi wants SSB for Nintendo Switch by TWINMILLARIO on DeviantArt

Mario and Luigi: Dream Team Nintendo 3DS : Unknown: Video Games