My Little Pony began as a Hasbro toy line and became widely known through My Little Pony: Friendship Is Magic, which premiered in 2010, and its human spin-off Equestria Girls, launched as a film in 2013. In those stories characters transform with bursts of rainbow magic and sparkle, a visual language fans quickly turned into edits and memes. Short transformation clips like this one spread on soundboards because the effect works outside the show too, signalling a glow up, a power up or a sudden cute change in any video.