The 'Moon Knight hippo hallway' meme originates from the Marvel series "Moon Knight," specifically featuring Taweret, the Egyptian goddess of childbirth and fertility, portrayed as a giant hippo. In the series, Taweret appears unexpectedly in a hallway, startling two characters who react with sheer terror. This scene has been captured in a three-panel meme format where the sequence of shock to panic is humorously exaggerated. The absurdity of a hippo goddess in full Egyptian regalia makes this a standout moment, easily lending itself to meme culture's love for the bizarre and unexpected.