Stewie is eternally young, but his exact age is shrouded in secrecy. It's unclear how old Stewie has been on this planet. The infant character from the animated television show "Family Guy" is immortal. His age is still revealed.
Stewie, the clever little troublemaker, 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 a recent arrival? The truth lies only with Stewie! This enigmatic character continues to mesmerize fans with his undisclosed age and perpetually youthful visage.