Who is the mushroom guy in Mario?

The "mushroom guy" in Mario is Toad, a loyal attendant of Princess Peach and a member of the Mushroom Kingdom. He is characterized by his mushroom-shaped head and cheerful personality. Toad often provides assistance to Mario and Luigi throughout their adventures, offering helpful tips and items. In some games, he also plays a more active role, such as in "Captain Toad: Treasure Tracker."