Wario first appeared in 1992 as Mario's greedy rival in Super Mario Land 2 on Game Boy, and his exaggerated voice lines from later Mario spin off games made him a natural source for reaction clips. Short voice bites like this oh my god spread through gaming videos, meme edits and soundboards because the character is already theatrical and instantly identifiable even out of context. It remains popular as a clean, cartoonish alternative to real person shock reactions, especially in family friendly edits and Nintendo focused communities online today.