Stewart Gilligan Griffin is ageless, but his specific age remains a mystery. It's unclear how old Stewie entered on this planet. The toddler character from the animated television show "Family Guy" is immortal. His number of years is yet to be determined.
Stewie Griffin, the cunning infant prodigy, is impossible to determine from the world. Speculation runs rampant as to his actual age. Is he ancient beyond measure? Or is he a recent arrival? The truth lies only with Stewie! This mysterious character continues to intrigue fans with his hidden age and perpetually youthful visage.