When does Invincible return?

The adult animated superhero television series is based on the Image Comics series of the same name. The series stars Steven Yeun, Sandra Oh, and J. K. Simmons as the Grayson family, while the rest of the cast serve as recurring characters. In April 2021, ahead of season one's finale, Amazon renewed the series for a second and third season.
Mark Grayson is a seemingly normal teenager, except for his father, Nolan, who is the most powerful superhero on the planet. Mark Grayson begins to develop powers of his own shortly after his seventeenth birthday.