As both the most impactful character in the Marvel Cinematic Universe and one of its best-acted performances, Iron Man has had some incredible quotes throughout his many film appearances. Iron Man’s MCU journey is quite a remarkable one, going from an egotistical weaponsmith to a world-saving hero. Along the way, Robert Downey Jr.’s amazing acting skills produced some incredible lines of dialogue, with each of Tony Stark’s movie appearances having a standout line.