‘Invincible’ Voice Cast: Who’s Who In Season 4, Episode 8?

You won’t have Invincible to kick around anymore as Season 4 concludes with Season 4, Episode 8 “Don’t Leave Me Hanging.” Wondering who’s who in the voice cast for the episode? Read on.

Before we get there, though, a brief recap for context, and spoilers past this point (though you can get a longer Season 4, Episode 8 recap on our podcast). After realizing that the surviving Viltrumites are headed to Earth, Mark is imagining what it might be like if they absolutely obliterate everything… But turns out, everything is very normal, which is somehow even more worrisome.

Mark continues to have PTSD, imagining Thragg killing his mom, but that’s nowhere near as terrifying as — gasp — Debbie possibly giving Nolan a second chance. While Nolan helps Earth build an early warning system for the Viltrumites, Zoe reconnects with her dad, who has a beard. Zoe does not have a beard, much to the dismay of comic book fans everywhere.

Mark then reconnects with Eve, who has gained a little weight but that’s okay. DA Sinclair is trying to create portals to find Monster Girl and Robot, without much success. And in space, Allen is having a hard time stepping up in Thaedus’s place, running the Coalition.

What else, what else… Paul and Debbie have broken up, and he encourages her to go into space to see Oliver. Eve reveals she had an abortion. And Nolan tours Earth, stopping at the mountain where he fought Mark in Season 1. There her’s confronted by Cecil, and Nolan laments that even saving the universe isn’t enough. “I nearly died out there,” Nolan says. “Great start,” answers Cecil. “Nearly die 2,341 more times and then we can talk.”

While Debbie does end up leaving Earth with Nolan, Mark asks Cecil for help — mental help — and takes a little flight… Where he sees Thragg for real. “Yes,” Thragg says. “We are here.”

Turns out there are 37 Viltrumites left, and after seeing how successfully Nolan mated with Debbie to make Mark, Thragg has decided to use Earth as their breeding ground. Mark’s choice? Let it happen, or everyone dies. Not much of a choice, but Mark agrees. “My answer is… yes,” Mark says, defeated. “I accept your terms.”

Then in the mid-credits scene, Allen gets a message from the very dead Thaedus, telling him about the perfected Scourge virus. Sure it could kill all humans in addition to Viltrumites, but that’s the cost Thaedus tells Allen he has to pay. Uh-oh! See you next season!

Looking for a cast guide for Invincible Season 4, Episode 1, cast guide for Invincible Season 4, Episode 2, cast guide for Invincible Season 4, Episode 3, cast guide for Invincible Season 4, Episode 4, cast guide for Invincible Season 4, Episode 5, cast guide for Invincible Season 4, Episode 6, or cast guide for Invincible Season 4, Episode 7? We’ve got that. For Episode 8, read on.

Invincible Season 4, Episode 8 “Don’t Leave Me Hanging Here” Cast: Who’s Who In The Voice Cast?

There’s nobody really new in this final episode, but we can note this likely marks the final appearance of Optimus Prime himself, Thaedus, on the series. Meanwhile, Brandon Scott and Luke MacFarlane return as William and Rick respectively, who we haven’t seen in a while.

Bobby Moynihan of SNL, Hoppers, and The Fall and Rise of Reggie Dinkins pops up as Zoe’s dad, Ed. And The Walking Dead and Teen Titans Go! star Khary Payton shows up as a Coaltion Representative.

But otherwise, yeah, you’ve heard all these folks on the show before!

Invincible Season 4, Episode 8 Cast List:

Here’s a full cast list from Invincible Season 4, Episode 8, “Don’t Leave Me Hanging” if you prefer to read it in list style instead of written out, as above:

Mark Grayson / Invincible…Steve Yeun
Debbie Grayson…Sandra Oh
Nolan Grayson / Omni-Man…J.K. Simmons
DA Sinclair / Leonine Delegate / Coaltion Representatives…Eric Bauza
Thaedus…Peter Cullen
Paul…Cliff Curtis
Daphne / Coalition Representatives…Grey Delisle
Zoe…Zoey Deutch
Donald…Chris Diamantopoulos
Cecil…Walton Goggins
Eve…Gillian Jacobs
William…Brandon Scott
Rick…Luke MacFarlane
Alien Captain / Coalition Representatives…Ross Marquand
Telia / Elia / Coalition Representatives…Tatiana Maslany
Ed…Bobby Moynihan
Thragg…Lee Pace
Coalition Representative…Khary Payton
Allen…Seth Rogen

Where To Watch Invincible:

Invincible Season 4 Premiere Dates And Episode Guide:

Season 4 of Invincible will premiere on Prime Video on Wednesday, March 18 at 3 am ET / 12 am PT with three new episodes. New episodes will then roll out one a week until the season finale on April 22, 2026.

Here’s the full list of episodes in Invincible Season 4:

• Wednesday, March 18, 2025: Invincible, Season 4, Episode 1
• Wednesday, March 18, 2025: Invincible, Season 4, Episode 2
• Wednesday, March 18, 2025: Invincible, Season 4, Episode 3
• Wednesday, March 25, 2025: Invincible, Season 4, Episode 4
• Wednesday, April 1, 2025: Invincible, Season 4, Episode 5
• Wednesday, April 8, 2025: Invincible, Season 4, Episode 6
• Wednesday, April 15, 2025: Invincible, Season 4, Episode 7
• Wednesday, April 22, 2025: Invincible, Season 4, Episode 8 *Season Finale*

Listen to Podvincible: An Invincible Podcast:

Looking for a lot more on Invincible? Then check out our podcast, which breaks down episodes of the series, and throws a few comic book Easter eggs in there, too.

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