Waluigi first appeared in Mario Tennis in 2000 for the Nintendo 64, created as a lanky rival for Luigi and a doubles partner for Wario. Voiced for many years by Charles Martinet, the character became known for exaggerated gestures, purple outfit and his distinctive Wah cries in Mario sports and party games. Clips of that vocalisation spread through gaming videos, remixes and meme edits in the 2000s and 2010s, turning a short in-game taunt into a widely recognised shorthand for scheming, losing or celebrating in a smug way.