yes, because in Mario party 5 they are called wicked bros.
No. Waluigi is just Wario's sidekick but both of them are Mario and Luigi's rivals
No, though they might be cousins, and Wario and Waluigi might be brothers, but it is uncomfimed.
Wario and Waluigi are brothers. They're the evil opposites of Mario and Luigi.
No. Mario and Luigi are brothers, and Waluigi and Wario are brothers. Wario and Mario; and Luigi and Waluigi are no related in any way. they are only rivals.
noNo. Mario and Luigi are brothers. They are cousins of Wario. Waluigi's relation to them is unknown but he is suspected to be Wario's brother.
No. Wario and Waluigi are brothers. BUT NOT OF MARIO.
no. they are brothers and everybody knows that. Wario and Waluigi are their evil twins.
Waluigi is about 30 and Wario is about 28
Luigi is Mario's brother. Waluigi is Wario's brother. They might all be brothers, though.
There is no official answer, honestly. All we know is they are Mario and Luigi's "evil counterparts." well Mario and luigi are cousins and waluigi and luigi are brothers Mario and Luigi are brothers... and I highly doubt that Wario and Waluigi are cousins with Mario and Luigi.
there are not characters in that game
they are brothers but they are half-brother luigi is Mario brother and waluigi is wario kind of brother but i don't know for sure but some people think that luigi and waluigi are brothers but again i still don't know for sure but i do know this Mario,luigi,wario,andwaluigi are all related.
Definitely not. Mario and Luigi are brothers, and their cousins are Wario and Waluigi.