Family Guy 25 Things About Stewie That Make No Sense TheGamerStewie is forever youthful, but his precise age remains a mystery. It's unknown the specific duration of time Stewie became living. The toddler persona from the animated television show "Family Guy" is immortal. His time on Earth is still determined.
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 a newcomer? The answer is known only to Stewie! This mysterious character continues to captivate fans with his undisclosed age and perpetually youthful visage.