The brother's mom was first mentioned by Spike about their call from her on how much she loved how well they're advertising their Plumbing Buisness, saying that their commercial is the best, so he said "Thank you, very much mother. We're very proud it."
She, later is first seen serving dinner in her family's household, after Mario and Luigi fail their first clients plumbing. She is amongst the members of the household to support the brothers for their new job.
Mushroom Kingdom • Peach's Castle • Obstacle Course • Jungle Kingdom • Great Ring of Kong • Rainbow Road • Bowser's Castle • Dark Lands • Snow Kingdom • Brooklyn • Mario and Luigi's Apartment • Brooklyn Couple's House • Castle Burger • Punch-Out Pizzeria • Mario and Luigi's House • Toad Town