Stewie is forever youthful, but his exact age is shrouded in secrecy. It's unknown the exact number of years Stewie entered living. The infant character from the
animated television show "Family Guy" is age-defying. His age is yet to be revealed.
Stewie Griffin, the mischievous baby genius, is keeping his age a secret from the world.
Speculation is rampant as to how many years he has been alive. Is he over a hundred years old? Or is he a recent arrival? The truth lies only with Stewie! This enchanting character continues to intrigue fans with his unrevealed age and youthful appearance.
Saison 4 des Griffin Wikipédia