The Invincible Season 4 finale has arrived on Prime Video, and the voice cast delivered some heavy moments in the episode titled “Don’t Leave Me Hanging Here.” The episode closed out the eight-episode run on April 22, 2026, bringing back the main voices along with some returning characters fans had not seen for several weeks.
The finale picks up after the destruction of planet Viltrum. Mark Grayson (voiced by Steven Yeun) struggles with PTSD throughout the episode, imagining Viltrumites causing death and destruction on Earth. But the real threat comes with a surprising offer from the Viltrumite leader.
Steven Yeun and J.K. Simmons Return for the Season Finale
Steven Yeun continues to voice the central hero Mark Grayson / Invincible. The episode shows Mark dealing with the mental weight of everything he has been through. He keeps seeing violent images of Viltrumites attacking Earth, even when everything is actually fine around him.
J.K. Simmons returns as Nolan Grayson / Omni-Man. The character spends most of the finale regretting his past actions from Season 1. He also takes Debbie to Talescria to check on Oliver, who is still recovering there. Fans have wanted more Omni-Man in recent seasons, and the finale gives Simmons room to work with the character’s guilt.
Sandra Oh voices Debbie Grayson, appearing alongside Omni-Man in key emotional beats of the episode.
Lee Pace’s Thragg Steals the Show With a Dangerous Offer
Lee Pace voices Thragg, the Grand Regent of the Viltrumite Empire. His character has been the main threat all season, and the finale puts him front and center. Instead of attacking Earth, Thragg offers Mark a truce. The Viltrumites will live among humans and grow their numbers peacefully.
Pace explained the deal in an interview with TheWrap:
“I find it so interesting, that deal, because why would he even tell him he’s doing it? Why wouldn’t he just do it and let Mark kind of realize people with powers are popping up all around, making him discover it himself? It’s an intriguing choice to make, that he would actually be like, ‘This is why I’m doing this. This is what I’m doing. You can like it, you can not like it, but you’re gonna have to deal with it. You’re gonna have to deal with me. I’m here now.’”
Reviewers have noted that Pace brings a quiet menace to Thragg that makes the character work so well. He does not appear much in the early part of the season but becomes a major presence in the final episodes.
Gillian Jacobs and Seth Rogen Deliver Key Moments
Gillian Jacobs returns as Atom Eve for the first time since Episode 5 of this season. In a moment taken straight from the comics, Eve tells Mark she was pregnant when he left for the war and informs him she had an abortion. A troubled Mark apologizes for leaving her at such a difficult time.
Seth Rogen voices Allen the Alien. After Thaedus gets killed by Thragg in the previous episode, Allen gets chosen as the new leader of the Coalition of Planets. The finale’s mid-credit scene shows Allen receiving a recorded message from Thaedus, who reveals a new form of the Scourge Virus that could kill all Viltrumites, including half-Viltrumites like Mark and Oliver.
Complete Invincible Season 4 Episode 8 Cast List
The full voice cast for the finale includes:
- Steven Yeun as Mark Grayson / Invincible
- J.K. Simmons as Nolan Grayson / Omni-Man
- Lee Pace as Thragg
- Sandra Oh as Debbie Grayson
- Gillian Jacobs as Atom Eve
- Seth Rogen as Allen the Alien
- Walton Goggins as Cecil Stedman
- Peter Cullen as Thaedus
- Zoey Deutch as Zoe Thompson / Tech Jacket
- Brandon Scott Jones as William Clockwell
- Chris Diamantopoulos as Donald Ferguson
- Ross Marquand as Alien Captain / Coalition Representatives
- Tatiana Maslany as Telia / Elia / Coalition Representatives
- Grey DeLisle as Daphne / Coalition Representatives
- Eric Bauza as DA Sinclair / Leonine Delegate / Coalition Representatives
- Cliff Curtis as Paul
- Luke MacFarlane as Rick
- Bobby Moynihan as Ed
- Khary Payton as Coalition Representative
Peter Cullen, known as the voice of Optimus Prime, likely makes his final appearance as Thaedus in this episode.
Where to Watch Invincible Season 4 Episode 8
All episodes of Invincible Season 4 are streaming now on Prime Video. The service releases new episodes at 3 a.m. ET on Wednesdays. Viewers in the USA, UK, Canada, Australia, and India can watch the entire season on the platform.
The fourth season consists of eight episodes, with the finale running around 50 minutes. The first three seasons are also available on Prime Video for those who need to catch up.
Also Read: Chicago Fire Season 14 Episode 19 Exit Point: Release Date, Time, and Story Details for April 29
For more entertainment news and updates on your favorite shows, keep checking back with VvipTimes for the latest scoops and breaking stories from the world of TV and streaming.
