S18E15Family Guy season 18 episode 15: Baby Stewie
Aired 15 March 202022 minRated TV-14
Where to watch Family Guy Season 18 in Australia
Family Guy season 18 is streaming in Australia on Disney+ (subscription, listed for the whole show).
We may earn a commission when you sign up through our links. How we make money.
Stream (subscription)
Stream Now on Disney+Disney+
Subscription · Listed for the whole show
From $9.99/mth
Availability checked 16 November 2026.
What happens in “Baby Stewie”
Stewie builds a DNA-altering machine that will allow him to remain smart forever, but the invention has the adverse effect and he instead transforms into what he should have always been - an actual baby.
Episode summary: TMDB.
Before you watch
- It is episode 15 of 20 of season 18, so watch episodes 1 to 14 first.
- It runs about 22 minutes.
- Directed by Jerry Langford, written by Artie Johann.
- TMDB users rate it 6.8 out of 10 (13 votes).
Cast and crew of this episode
- Director
- Jerry Langford
- Writer
- Artie Johann
- Guest stars
- Brett Gelman as Escape Room Guy (voice)Mike Desilets as (voice)Judy Greer as Bozo's Client / Sylvester Stallone's Assistant (voice)Robert Wu as Korean General (voice)Artie Johann as James Taylor (voice)Steve Callaghan as Audience Member / Target Employee (voice)Dee Bradley Baker as Gremlin Stewie (voice)Ralph Garman as Man (voice)
Credits: TMDB.
More from Family Guy Season 18
Every episode of Season 18Family Guy episode guide
Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.