Species: Meme Creature Maximum length: 40–50cm Characterized by the appearance of a Shiba Inu. It converts pure feelings of "So cute!" from humans into energy, but more than that, it often consumes the volatility of cryptocurrencies like "Dogecoin" as nutrients. It can only say "Woof!" or "Woof woof!!"

Species: Meme Creature Maximum length: 16–24cm Characterized by the appearance of a baseball player with both arms spread wide in a perfect 'Y' shape and a straight back. Upon finding prey, it vibrates its throat violently to emit a terrifying, distorted shriek (super-acoustic) that sounds like "Eeeei!" Humans or Meme Creatures hit by this roar at close range lose their sense of balance and collapse on the spot. It can only say "Eeeei."

Species: Meme Creature Maximum length: 4–10cm Characterized by the appearance of a white barn owl walking on two legs. Behind them as they run, the auditory hallucination of "Heave-ho, heave-ho" always echoes through the surroundings. Humans who hear this sound feel an inexplicable urge to cheer them on, or are driven by a compulsion to start running along with them. It can only say "Heave-ho, heave-ho, gotta tell 'em [Subject] is [Predicate]. Heave-ho, heave-ho."

Species: Meme Creature Maximum length: 50–65cm Characterized by the appearance of a Japanese man with monolid (or hooded) eyes and thick eyebrows. Those eyes, staring at a subtle angle, launch a mental attack that causes specific numerical sequences like "114514" or "810" to refrain directly in the viewer's mind. Its main diet consists of human "enthusiasm" and "endless speculation." The phrase of total affirmation it utters, "Yarimasune!" (Not bad!), abnormally boosts the motivation of surrounding creatures, but in exchange, it gradually erodes their minds with "Goroku" (a specific slang dialect). It can only say "Yarimasune" or "Iiyo, koiyo."