The 'Oh No Monkey' meme features the character Raka, an orangutan from the 2024 film Kingdom of the Planet of the Apes. The meme took off after the movie's promotional trailers and release, where Raka delivers a perfectly timed, sincere, and humorous 'Oh no!' in response to a disappointing development. Internet users quickly adopted the clip and still frames as the ultimate reaction for secondhand embarrassment, self-inflicted disasters, or watching a situation go south. The meme's appeal lies in Raka's highly expressive facial features and the versatile nature of his exclamation, making it a staple for social media commentary on everything from crypto crashes to relatable daily mishaps.