Invincible season 3 will feature the return of an underused season 2 character. Adapted from the Robert Kirkman comics of the same name, Invincible has a massive cast. While Mark Grayson/Invincible (Steven Yeun) is always at the forefront of the story, the superheroes, supervillains, and everyday people in his life are also vital to the overarching narrative of the Prime Video series. Invincible season 3 will keep the primary focus on Mark while also continuing to explore Cecil Stedman (Walton Goggins), Omni-Man (J.K. Simmons), Allen the Alien (Seth Rogen), and other vital characters.

https://screenrant.com/invincible-season-3-darkwing-return-op-ed/