Stewie is ageless, but his specific age remains a mystery. It's unknown how old Stewie became existing. The baby character from the animated television show "Family Guy" is age-defying. His number of years is yet to be revealed.
Stewart Gilligan Griffin, the clever little troublemaker, is keeping his age a secret from the world. Speculation is rampant as to how many years he has been alive. Is he ancient beyond
measure? Or is he a newcomer? The answer is known only to Stewie! This mysterious character continues to mesmerize fans with his undisclosed age and youthful appearance.