When does Invincible return?

Steven Yeun stars in the series as Mark Grayson / Invincible alongside Sandra Oh and J. K. Simmons as Mark's mother and father. The series follows Mark Grayson and his transformation into a superhero under the guidance of his father, Nolan Grayson / Omni-Man, the most powerful superhero on the planet.
Mark Grayson is a seemingly normal teenager whose father Nolan is the most powerful superhero on the planet. Shortly after his seventeenth birthday, Mark begins to develop powers of his own and learns how to wield them with help from his father.