The Riku Shake meme originates from the dedicated Kingdom Hearts fan community, featuring the iconic character Riku performing a high-energy, jittery dance movement. Similar to other viral 'shake' trends in anime and gaming circles, this animation is typically paired with upbeat, bass-heavy music to signify extreme excitement or chaotic energy. It gained widespread popularity on social media platforms like TikTok and X, where fans use it to react to game announcements, soundtrack releases, or inside jokes within the franchise. The meme's appeal lies in its infectious rhythm and the humorous juxtaposition of Riku’s usually serious demeanor with such a frantic, joyful animation.