List of Family Guy cast members WikipediaStewie Griffin is forever youthful, but his exact age remains a mystery. It's unknown how old Stewie entered living. The toddler persona from the animated television show "Family Guy" is immortal. His age is yet revealed.
Stewie Griffin, the clever little troublemaker, is impossible to determine from the world. Speculation abounds as to his actual age. Is he over a hundred years old? Or is he a newcomer? The truth lies only with Stewie! This mysterious character continues to intrigue fans with his unrevealed age and perpetually youthful visage.
