The Ace Combat JPEG Dog meme originated from the 2019 flight simulation game Ace Combat 7: Skies Unknown. During a cutscene featuring the character Princess Rosa Cossette D'Elise, players noticed a Golden Retriever that was noticeably a static, flat 2D image placed within the high-fidelity 3D environment. The dog’s complete lack of animation and 'cardboard' appearance quickly became a viral sensation among the gaming community, symbolizing both a hilarious development oversight and a charming mascot for the franchise. It is commonly used to joke about low-budget assets in AAA games or to represent something being unbothered, stoic, and completely out of place.