Baby Mario is a character with the body of a snake and the head of Mario. He is known by this name due to Charles Martinet adopting him as a young boy. Baby Mario is a huge fan of third-wave ska, and is often seen wearing a pork pie hat and dancing aggressively to Streetlight Manifesto.
- His cries have been known to drive Yoshis off a cliff to their demise.
- Nintendo revealed in its daily blog that, in his debut in Do You Think This is All Just a Game?, Baby Mario was originally set to have the body of a snake and the head of a snake. It is unclear whether this usage of the word "snake" referred to the animal or the character.