Stewie is timeless, but his exact age remains a mystery. It's unknown the specific duration of time Stewie has been living. The infant persona from the animated television show "Family Guy" is immortal. His age is yet determined.
Stewie Griffin, the cunning infant prodigy, is hiding his true age from the world. Speculation is rampant as to the length of time he has existed. Is he a century old? Or is he fresh to the world? The answer is known only to Stewie! This enigmatic character continues to mesmerize fans with his hidden age and perpetually youthful visage.