Imagine Robert Downey Jr. as Doctor Doom from Marvel Comics. He is dressed in Doctor Doom's iconic metallic armor and a dark green hooded cloak. His expression is stern and intense, reflecting the character's imposing nature. The background is a realistic blend of futuristic technology and dark, foreboding elements, enhancing the dramatic atmosphere. The scene captures the essence of Robert Downey Jr.'s charisma and the menacing presence of Doctor Doom in a highly realistic and detailed manner.