Prime Video's hit superhero show "Invincible" just wrapped up its third season, and you won't have to wait long to see what's in store for Mark Grayson (Steven Yeun) and his crime-fighting cohorts. "Invincible" creator Robert Kirkman's Skybound Entertainment announced last week that "Invincible" season 4 will launch sometime next year.
That's not the only big news, though. The update revealed that all voice acting is complete, season 4 will feature a new storyline with Darkblood that's not in the comics, and, most importantly, that the biggest villain Mark will ever face has been cast: Thragg, the ruler of the Viltrumite Empire.
