Nakayama Kinnikun is a Japanese comedian and bodybuilder known for incorporating bodybuilding poses, muscle humor, and the English word “Power!” into his performances. The catchphrase became closely associated with his public persona through Japanese television appearances and later reached wider online audiences through short videos, reposts, reaction edits, and memes. Its brief length and unmistakable delivery make it easy to synchronize with visual punchlines. It remains popular in fitness content and comedy because it communicates effort, confidence, and absurdly intense enthusiasm almost instantly.