Season 9 · Episode 16 · First aired 8 May 2011
The Big Bang Theory
Episode 16 of Family Guy season 9 (S09E16), the 163rd Family Guy episode overall. Written by David A. Goodman and directed by Dominic Polcino. First broadcast on 8 May 2011.
Story
Stewie works out that his own travels in time caused the Big Bang and so brought the universe into being. His rival Bertram sets out to use that fact, planning to go back and kill Leonardo da Vinci, an ancestor of Stewie, so that Stewie is never born. Since the killing would also undo the Big Bang and wipe out everything else, Stewie and Brian follow Bertram into the past to stop him.
Voices
| Voice | Characters |
|---|---|
| Seth MacFarlane | Peter Griffin, Brian Griffin, Stewie Griffin |
| Alex Borstein | Lois Griffin, Stephanie |
| Seth Green | Chris Griffin |
| Mila Kunis | Meg Griffin, Meg Griffin |
| Mike Henry | Cleveland Brown |
| Joe Flaherty | Vatican Messenger |
| Wallace Shawn | Bertram |
| Danny Smith | Voiceover, Snake, Thomas Edison |
| Alec Sulkin | Italian Man #2 |
| John Viener | Clinic, Yousef |
Principal voice credits as recorded by IMDb, which lists up to ten credits per episode, so recurring characters can be missing here. Guest voices below come from Wikipedia and TVmaze.
Guest voices
- Mike Henry as Cleveland Brown
- Wallace Shawn as Bertram
- Seth MacFarlane as Leonardo da Vinci
- Alex Borstein as Edison's Wife
- Joe Flaherty as Vatican Delivery Man
Season 9: episode 16 of 18
- E1And Then There Were Fewer
- E2Excellence in Broadcasting
- E3Welcome Back, Carter
- E4Halloween on Spooner Street
- E5Baby, You Knock Me Out
- E6Brian Writes a Bestseller
- E7Road to the North Pole
- E8New Kidney in Town
- E9And I'm Joyce Kinney
- E10Friends of Peter G.
- E11German Guy
- E12The Hand That Rocks the Wheelchair
- E13Trading Places
- E14Tiegs for Two
- E15Brothers & Sisters
- E16The Big Bang TheoryYou are here
- E17Foreign Affairs
- E18It's a Trap!
SourceFacts from Wikipedia: Family Guy season 9 (CC BY-SA 4.0). Spotted an error? See corrections.
Provenance
Facts only- Sources
- Data refreshed
- 6 September 2026
- Verification
- Checked against Wikidata and IMDb: title, date, numbering and credits agree
- Licence
- Facts are not copyrightable. Source text on Wikipedia is CC BY-SA 4.0; Wikidata is CC0; IMDb data is used for verification under its non-commercial terms.
- Note
- The story summary and notes were written for this site from the sources listed, by Claude in Claude Code on 2026-09-08, awaiting editorial review. Facts only; no dialogue is reproduced. Voice credits: Information courtesy of IMDb (https://www.imdb.com). Used with permission. Guest cast data from TVmaze (https://www.tvmaze.com), CC BY-SA.