Waluigi is a fictional character in the Mario video game franchise created by Nintendo. He first appeared in the game Mario Tennis in 2000 as a partner to Wario, serving as an antagonist to Luigi. Waluigi is characterized by his tall, lanky appearance, purple clothing, and a distinctive mustache. Waluigi is often portrayed as a mischievous and cunning character, frequently competing in various sports and party games alongside other characters from the Mario series. Despite his popularity among fans, he has not starred in his own standalone game, making him a unique figure in the Nintendo universe.