Invincible fans waited more than two years for the animated series' second season, and so far it has not disappointed. Mark Grayson and his father Omni-Man are the pillars of the show, but they are both Viltrumites - a race of super-powered aliens who have conquered much of the galaxy. Luckily, Mark is a good guy. Earth is home to other super-powered individuals, but most of them are human.
Source：https://www.cbr.com/strongest-human-characters-in-invincible/
