Rimuru Tempest is the protagonist of That Time I Got Reincarnated as a Slime, the Japanese fantasy series in which an ordinary man is reborn as a powerful slime in a new world. The anime adaptation, which began in 2018, helped turn Rimuru into a widely recognised anime figure, and short clips of the character are now shared across soundboards, edits and meme videos. Fans keep using them because Rimuru combines an approachable, playful image with surprising strength, making a brief sound instantly readable to anime audiences.