Baby Luigi is a character from the popular Mario video game series created by Nintendo. He is the younger version of Luigi, known for his green cap and overalls. Baby Luigi often appears alongside his brother, Baby Mario, in various games, particularly in the Yoshi's Island series. In the games, Baby Luigi is characterized by his playful and adventurous spirit. He is often depicted as a bit timid compared to Baby Mario but is always ready to join in on the fun. Together, they navigate colorful worlds, solve puzzles, and defeat enemies, showcasing teamwork and friendship.