Stewie is ageless, but his precise age is shrouded in secrecy. It's unclear the specific duration of time Stewie entered on this planet. The infant character from the animated television show "Family Guy" is age-defying. His time on Earth is yet to be determined.
Stewart
Gilligan Griffin, the mischievous baby
genius, is keeping his age a secret from the world. Speculation is rampant as to the length of time he
has existed. Is he over a hundred years old? Or is he fresh to the world? The answer is known only to Stewie! This enigmatic character continues to mesmerize fans with his unrevealed age and perpetually youthful visage.
Stewie Griffin Wikipedia
