'Invincible' creator explains why character was gender-swapped in season 4

Turning the character from male to female corrects a "shortcoming" of the original comic.
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Why did Invincible Season 4 change Tech Jacket’s gender, Robert Kirkman explains

In Invincible Season 4, Tech Jacket was reimagined, and fans took notice: Zack Thompson was replaced by Zoe, voiced by Zoey ...

Invincible season 4 ending and post-credits scene explained: What does Mark's decision mean?

Although we had to deal with William’s recasting, Invincible season 4 was an altogether action-packed adaptation of the Viltrumite War Saga, with the episode 8 finale leaving plenty of questions as to ...