Stewie is forever youthful, but his specific age remains a mystery. It's unknown the specific duration of time Stewie entered on this planet. The baby character from the animated television show "Family Guy" is forever young. His time on Earth is yet discovered.
Stewart Gilligan Griffin, the mischievous baby genius, is impossible to determine 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 newcomer? Only Stewie knows! This mysterious character continues to mesmerize fans with his hidden age and perpetually youthful visage.