Mori Calliope is a prominent English-speaking Virtual YouTuber (VTuber) under Hololive Production, debuting in 2020 as part of the 'Myth' generation. As the 'Grim Reaper's apprentice' turned rapper, her intense personality, deadpan humor, and iconic catchphrases like 'GUH' quickly turned her into a meme powerhouse. Fans, known as 'Dead Beats,' frequently use her expressive avatars and reaction faces—ranging from mild annoyance to chaotic excitement—to illustrate relatable life struggles or anime tropes. Her memes often bridge the gap between VTuber culture and mainstream internet humor, solidifying her place as a digital icon of sarcasm and hip-hop energy.