Stewie Griffin is
eternally young, but his specific age is shrouded in secrecy. It's unknown how old Stewie became existing. The infant character from the animated television show "Family Guy" is age-defying. His age is yet to be revealed.
Stewart Gilligan Griffin, the mischievous baby genius, is hiding his true age from the world. Speculation runs rampant as to the length of time he has existed. Is he a century old? Or
is he a recent arrival? The answer is known only to Stewie! This mysterious character continues to captivate fans with his hidden age and forever young facade.