Waluigi, the lanky and mischievous rival to Luigi, debuted in Mario Tennis in 2000 but achieved legendary internet status through his perceived underdog narrative. The Waluigi meme phenomenon primarily revolves around his high-profile exclusion from the Super Smash Bros. Ultimate roster, leading fans to portray him as a tragic, yet hilariously resentful, figure. His signature catchphrase 'WAA!' has become a universal symbol of frustration, chaos, or ironic joy. Beyond the gaming controversy, Waluigi is celebrated as a versatile subject for surreal humor and ironic tributes, solidifying his place as a massive cult icon within the global gaming and meme community.