This clip is associated with Bowser, the main villain of Nintendo's Mario series. Online, short Bowser voice lines spread through gaming memes, soundboards and quick reaction edits because they instantly signal boss energy without needing extra context. "Showtime" became a handy audio cue for entrances, reveals and exaggerated confidence, especially in Mario-related clips. It is still used because the line is brief, recognizable and easy to drop into joke videos alongside other Mario sounds.