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

What do Italians think of Mario and Luigi? How are they marketed in Italy? - Quora

How to beat the twin's room in Luigi's Mansion - Quora

Pianokantzart — Who's ur fav character and why is it Luigi (only

Do you think Wario is better than Waluigi in terms of character design? Why or why not? - Quora

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

Would you have preferred if Mario and Luigi had remained identical twins as they originally started? : r/videogames

Did you know that Mario and Luigi are twin brothers?

Wait, what? Luigi is Mario's twin??? Found this on the Super Mario Run App. : r/Mario

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

What are some of the most interesting identical twins' stories you have heard? - Quora

Can I name twin boys Mario and Luigi? - Quora

What is Luigi's personality? - Quora