Invincible's upcoming battle with the devil is something that actually never happened in the comics, but was a story that ...

We haven’t seen Darkblood since season 1, but he emerges from hell alongside a devil that is voiced by Campbell ... to doing anything like that in ‘Invincible.’ I kept getting sidetracked ...

Invincible Season 4 will likely test Mark with even more villains than ever before, and plunging into Hell to face a new demonic entity voiced by Bruce Campbell is going to make for quite the episode.