Giovanni Bernardi is a human who works as a janitor at Mushroom Castle, and is the adoptive son of Toadsworth. Giovanni is seen by his peers as heroic and polite, but oddly cold and brutal to those who cross him. Cursed at birth by an ancient evil known as "The Dark Star", Giovanni was gifted with the powers manipulate dark matter, allowing him to create shadow clones, mimic the Star Children's elemental powers, and a dark aura that enhances his strength and nullifies most attacks. These powers come with a trade-off; they only activate when the user is enraged and they slowly drive the user into a state of insanity. Giovanni has joined Mario and Luigi in several of their adventures over the years, and even had some of his own, and is seen a powerful and reliable ally. He's also quite the handyman with machines and pilots the Sky Pop, a plane once owned by Mario.
Giovanni is roughly in his earlier 20s.

Voice Reference: Pete Gold