Oscar nominee and internet's best movie reviewer Richard E. Grant has joined the cast of the Loki series on Disney+, according to The Wrap. Tom Hiddleston reprises his role as the MCU's resident trickster god, picking up after the events of Avengers: Endgame. No specifics yet on how Grant will fit in, but he's the latest addition to a cast that now includes Owen Wilson, Gugu Mbatha-Raw, and Sophia Di Martino. Ricky & Morty writer Michael Waldron will serve as showrunner on the series, while Sex Education director Kate Herron is set to direct the six-…