Karlson, or Karlsson-on-the-Roof, comes from Astrid Lindgren's children's books and became a Soviet cultural icon through the animated films Malysh i Karlson (1968) and Karlson vernulsya (1970), with Vasily Livanov voicing the character. Generations of Russian-speaking viewers grew up quoting his boastful lines, so his voice became shorthand for playful mischief. Online, clips of the cartoon are constantly remixed into memes, reaction edits and nostalgic compilations, which keeps the character's old-fashioned charm alive for audiences who never saw the original films.