Who voices Ambrosius in The Boys season 4? The surprise big-name cameo, explained

The Boys season 4
(Image credit: Prime Video)

The Boys has a long, storied history of surprise cameos and big names popping in for a brief appearance. This aquatic moment from the season four premiere tops the lot, though – and, yes, it is exactly who it sounds like.

Spoilers for The Boys season 4 episodes 1-3 follow!

As revealed early on in The Boys season 4, The Deep is harboring a secret. He has kept the octopus he found at last year’s Herogasm ‘meet up’. Ambrosius, as it turns out, is living in a secluded, cordoned-off tank near his bed.

Ambrosius’ voice should sound familiar to those with a keen ear. It’s Tilda Swinton, who has appeared in the Chronicles of Narnia series, has frequently collaborated with Wes Anderson and, of course, has her own superhero-adjacent experience as The Ancient One in Doctor Strange and Avengers: Endgame.

Tilda Swinton in We Need to Talk About Kevin

(Image credit: BBC Fiilms)

Tilda Swinton isn’t the only A-list cameo in The Boys season 4. Will Ferrell appears as himself – gunning for an Oscar – in a Vought film alongside A-Train.

Fans of the Prime Video series will be acutely aware that this isn’t the first time Chace Crawford’s seafaring Supe will have been opposite a surprise guest star.

Back in the second season, a bad trip for The Deep led him to hallucinate that his gills were talking. Patton Oswalt provided the voice on that occasion – making the whole experience even wackier.

The Boys season 4 is now streaming on Prime Video. For more, check out The Boys season 4 release schedule and the best shows on Prime Video.

Bradley Russell

I'm the Senior Entertainment Writer here at 12DOVE, focusing on news, features, and interviews with some of the biggest names in film and TV. On-site, you'll find me marveling at Marvel and providing analysis and room temperature takes on the newest films, Star Wars and, of course, anime. Outside of GR, I love getting lost in a good 100-hour JRPG, Warzone, and kicking back on the (virtual) field with Football Manager. My work has also been featured in OPM, FourFourTwo, and Game Revolution.