‘Invincible’ Voice Cast: Who’s Who In Season 4, Episode 3, Including Titan And Machine Head?

Three episodes of Invincible on premiere day? How did we get so lucky?? And with the third of those Season 4 episodes, “I Gotta Get Some Air,” featuring the Prime Video series as-usual packed voice cast, you’re probably wondering who some of these folks are, from Titan to Machine Head and beyond. Hey, that’s what we’re gonna explain in this article!

Before we get there, though, a brief recap for context, and spoilers past this point (though you can get a longer Season 4, Episode 3 recap on our podcast). In the hour, we’re back with the crime side of the world of Invincible, as Machine Head returns, trying to get Titan to rejoin The Order. Titan, you’ll recall, went through a whole thing to not do that, but Machine Head doesn’t compute no for an answer.

First, the news, though. Rex/Robot swallowed a Sequid in the Season 4 premiere, but it’s okay because Monster Girl squishes it. Meanwhile, Debbie and Paul are moving in together, and DA Sinclair really wants to apologize for the whole “killing people at college” thing.

Okay, back to the main plots. First, the Flaxans attack and have hid their emitter — the thingy that keeps their accelerated aging at bay — on the other side of a portal. Robot figures it out and he and Monster Girl destroy the emitter… Only to be trapped on the other side of the portal. And with time passing way quicker on the other side, before the Guardians can get them back there might be centuries that have passed.

While that’s going on, Titan’s family is attacked by Magnattack, basically “what if Shredder had magnets.” Titan stops him, but it seems that Mr. Liu, who changes into a giant dragon, is behind the attack. Kid Omni-Man (aka, Oliver) takes on an Invincible Inc. job from Titan, who wants help with Liu, and they track him down… But it’s too much for Oliver. Luckily, Mark shows up to save the day, but that’s unlucky for Titan, who almost gets beaten to death by our “hero.”

The outcome is that Titan and Mr. Liu were tricked by Machine Head into rejoining The Order (it seems like Machine Head called the attack in Titan’s family and framed Liu). And in the mid-credits scene, we discover why Eve’s powers have been on the fritz: she’s pregnant.

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

Invincible Season 4, Episode 3 “I Gotta Get Some Air” Cast: Who’s Who In The Voice Cast?

We won’t break down the full cast list because you likely know the main folks involved. But let’s start with Machine Head, who is once again voiced by Burn Notice star Jeffrey Donovan. Titan, meanwhile, is voiced by Todd Williams, who took over in Season 2 from Mahershala Ali. Funnily enough, Williams also played the voice of Blade on Marvel Zombies, which was the debut of Blade in the MCU, a role that was supposed to be played by… Mahershala Ali.

Utility player Eric Bauza plays Magnattack, and he’s also DA Sinclair, among many other voices. Tzi Ma returns as the voice of Mr. Liu, and you might recognize him from The Farewell, or the Rush Hour series. Somali Rose plays the voice of Titan’s daughter Fiona, and previously voiced Missy’s Overalls on Big Mouth. Finally, Nailed It host Nicole Byer returns as Titan’s wife, Vanessa.

Invincible Season 4, Episode 3 Cast List:

Here’s a full cast list from Invincible Season 4, Episode 3, “I Gotta Get Some Air” 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
Brit…Jonathan Banks
DA Sinclair / Magnattack / Male Security…Eric Bauza
Vanessa…Nicole Byer
Oliver / Young Omni Man…Christian Convery
Paul…Cliff Curtis
Amanda / Daphne / Female Security…Grey Delisle
Donald / Isotope…Chris Diamantopoulos
Machine Head…Jeffrey Donovan
Cecil…Walton Goggins
Eve / Atom Eve…Gillian Jacobs
Mr. Liu…Tzi Ma
Rex / Robot…Ross Marquand
Black Samson…Khary Payton
Bulletproof…Jay Pharoah
Monster Girl…Kevin Michael Richardson
Fiona…Somali Rose
Shapesmith…Ben Schwartz
Titan…Todd Williams
Additional Voice…Dee Bradley Baker, Nyima Funk, Bobby Kesselman, Dan Navarro, Amu Shukla

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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