Waluigi debuted in Mario Tennis in 2000 as Luigi's tall, scheming rival and Wario's doubles partner, quickly becoming a fan favourite for his theatrical whining and exaggerated reactions. Clips of his voice lines have circulated for years in gaming edits and meme compilations, where his insincere tone is borrowed to comment on other people's wins. The short 'nice' line survives because it needs no context, viewers recognise the character instantly and understand the praise is not entirely genuine, making it a reusable reaction across Nintendo fandom.