Stewart Gilligan Griffin is eternally young, but his exact age remains a mystery. It's unclear the specific duration of time Stewie became on this planet. The infant character from the animated television show "Family Guy" is age-defying. His time on Earth is yet revealed.
Stewart Gilligan Griffin, the mischievous baby genius, is impossible to determine from the world. Speculation runs rampant as to how many years he has been alive. Is he a century old? Or is he fresh to the world? The answer is known only to Stewie! This mysterious character continues to intrigue fans with his hidden age and youthful appearance.