Mario

"It's-a me, Mario!"

- Mario, Cool, Cool Forest (Chapter 7)

Mario is the brother of Luigi and a major character in Undertoad. He first appears in the forest after the protagonist exits the Ruins. He serves as a supporting character in the Neutral and True Pacifist routes.

Appearance
Mario is a human male, slightly taller than the protagonist. He has brown hair, a large mustache, and a big nose. He wears a red jacket with a fuzzy, light grey collar. He wears a white collared shirt, white gloves, blue denim jeans, and brown work boots.

Personality
Mario, similar to his game counterpart, is a very warm and friendly person. He is on good to decent terms with most citizens of Sherborough. When he first meets Toad, he behaves in a very playful manner, accidentally "scorching" Toad's hand during a handshake. He jokes around with Luigi, pretending he forgot a wrench they needed for a plumbing job when he actually had it on him the whole time.

Despite his seemingly laid back attitude, Mario is very active, and helps Toad at multiple opportunities, such as scaring off Jr. Troopa, giving toad a BADGE option in his menu, and briefly attempting to hide Toad from Luigi. He is also a known regular at Podley's, always entering by shouting "It's-a-me!", much to the disdain of Green.

Mario is not always as happy-go-lucky, as seen during ''Sherborough? Sure, Bro!'' where he confronts Toad to tell them the dangers of fighting Luigi head-on. His cheerful persona also drops during This here's MY Playground!, where he shows genuine anger with Luigi when he uses Brobot as an attempt to capture Toad.