Stewart Gilligan Griffin is eternally young, but his exact age remains a mystery. It's unclear the exact number of years Stewie has been on this planet. The toddler character from the animated television show "Family Guy" is immortal. His age is still discovered.
Stewart Gilligan Griffin, the cunning infant prodigy, is keeping his age a secret from the world. Speculation abounds as to his actual age. Is he ancient beyond measure? Or is he a recent arrival? Only Stewie knows! This mysterious character continues to mesmerize fans with his unrevealed age and youthful appearance.