The 'Gregory Is None Other Than...' meme originates from the Five Nights at Freddy's: Security Breach - Ruin DLC, specifically referencing the dramatic climax involving Cassie and the reveal of the 'Gregory' voice identity. It gained traction on social media as fans used the suspenseful prompt to insert unexpected characters, bizarre images, or meta-jokes about the franchise's convoluted lore. The meme thrives on the tension of a major reveal being subverted by something nonsensical, often replacing the intended 'Mimic' character with anything from other video game icons to obscure internet references, making it a staple for FNAF community humor.