Who is older Mario or Luigi?
Me and my sister are fighting over who it is
Between Mario and Luigi, Mario is the eldest. They are twin brothers and Luigi is the younger brother of Mario. You can get more information about the two on http://en.wikipedia.org/wiki/Luigi.
Mario, he was introduced first then Luigi was born. all in 1983.
Mario is older
Mario is older even if Luigi is taller does not mean he's older.