The clip takes its name from online edits tagged Sanctuary Guardian, a reference familiar to EarthBound fans, and pairs that association with the simple what reaction meme. Bass boosted versions spread through short video edits and soundboards, where a four second clip is easy to loop, layer and reuse as a punchline. Its appeal is its brevity and recognisable drop, so creators can signal confusion without any setup or dialogue. It remains popular alongside other reaction sounds because the heavy low end translates even on phone speakers.