Stewie is forever youthful, but his specific age remains a mystery. It's unknown the specific duration of time Stewie became existing. The infant character from the animated television show "Family Guy" is immortal. His age is still determined.
Stewie, 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 ancient beyond measure? Or is he fresh to the world? Only Stewie knows! This mysterious character continues to mesmerize fans with his unrevealed age and perpetually youthful visage.