Stewie spinoff reveals full voice cast

The full voice cast for "Stewie," the upcoming "Family Guy" spinoff centered on the Griffin family's diabolical infant, was revealed on July 22, 2026. The series, which received a two-season order in March, will feature series creator Seth MacFarlane reprising his role as Stewie while also voicing a new, mostly silent classmate named Bean.

The animated series, a co-production of 20th Television Animation, Fox, and Hulu, will follow Stewie after he is expelled from his old preschool and forced to enroll in a subpar new school. The show's premise describes a miserable classroom environment featuring children Stewie does not know, a teacher who should not be near children, and a hundred-year-old class turtle. The situation changes when Stewie uses his array of devices to transport the class on adventures through space and time.

Joining MacFarlane in the voice cast are several "Family Guy" veterans and new additions. Mike Henry, who voices Cleveland Brown and other characters on the parent series, will voice a new gossipy classmate named BJ, who is the son of Henry's existing "Family Guy" character, Bruce. Writer-producer Aaron Lee will voice the elderly class turtle, Skunk.