Buccio Mario (1892–1984) is the Italian-American father of Ruigario and the grandfather of Mario and Luigi, and the guardian of them after the death of their parents. He is a heavy drinker of alcohol and has a generally grumpy personality, but he really cares about his grandchildren, as his own father never cared about him, and was a much better influence on them than either of their parents were. He is a plumber.
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