Luigi was introduced as Mario's younger brother in the game 'Mario Bros.' in 1983. He has historically been portrayed as the timid counterpart to Mario, often taking on a supporting role in adventures. However, with the release of 'Luigi's Mansion' in 2001, where he became the protagonist by exploring a haunted mansion to rescue Mario, Luigi's character began to evolve significantly. His popularity surged due to his unique ghost-busting abilities and his distinct personality, characterized by a mixture of bravery and cowardice. In 'Luigi's Mansion 3', released for the Nintendo Switch in 2019, Luigi continues his ghost-hunting adventures as he explores the haunted Last Resort hotel, showcasing his problem-solving skills and teamwork abilities alongside his friends. Luigi has become an iconic character in video games, representing not just a sidekick but a hero in his own right, embodying themes of courage despite fear.