Invincible season 4 goof is an embarrassing animation mistake that should have been spotted

Invincible's animation woes continue as Thragg's epic fight scene contains an embarrassing mistake that really should have been noticed in advance.

Spoilers for Invincible season 4 follow.

As spotted by viewers in Invincible season 4's penultimate episode, the Viltrumite War in space sees a character literally disappearing from the frame.

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The moment in question, as you can see below, features Tech-Jacket firing an explosive projectile at a Viltrumite and sending him flying across the stars. But, bizarrely, he quite literally gets removed from the frame at the very end of the scene.

As many will attest, Invincible's animation has taken a noticeable dip since the first season's electric debut.

Then, Invincible had the benefit of multiple years of pre-production and concept work before hitting our screens. Now, creator Robert Kirkman has been open about slightly shorter turnarounds, and it appears the work has suffered somewhat. But this is by far the most egregious example to date.

Invincible season 4 has been one of peaks and troughs so far. Its Hell-centric episode, an original idea from Kirkman not present in the comics, is among the show's lowest-rated episodes on IMDb.

But the Prime Video series quickly bounced back with its fifth and seventh episodes reaching close to series highs for Invincible.

Invincible may even make its long-awaited jump to live-action in the future.

"It's definitely a long process, and it's something that hopefully will come together sooner rather than later," Kirkman told ScreenRant earlier this year. At the very least, there won't be any animation snafus to worry about.

For more, check out the Invincible season 4 release schedule and our picks for the best shows on Prime Video.