Grieve-tan is a fan-made 'moe' personification based on a minor demon character from the series Frieren: Beyond Journey's End. While the original character is a cold and dangerous adversary, the internet community transformed her into a mascot often depicted as smug yet easily defeated or 'bullied.' The meme typically centers on her failed attempts to be menacing, making her a popular reaction image for feeling pathetic yet adorable. It gained significant traction on platforms like 4chan and X (Twitter) as artists shared stylized fan art of her reacting to embarrassing situations or being outsmarted by the protagonists.