Marvel Studios’ “Loki” features the God of Mischief as he steps out of his brother’s shadow in a new Disney+ series that takes place after the events of “Avengers: Endgame.” Tom Hiddleston returns as the title character, joined by Owen Wilson, Gugu Mbatha-Raw, Sophia Di Martino, Wunmi Mosaku and Richard E. Grant. Kate Herron directs “Loki,” and Michael Waldron is head writer.