Jim Carrey chats with ET’s Nischelle Turner at the UK premiere of ‘Sonic the Hedgehog 3,’ which dashes into theaters on Dec. 20. The 62-year-old actor reprises his role as the villainous Dr. Ivo Robotnik and takes on a new twist by also playing Robotnik’s grandfather, Gerald, in the sequel. Jim reflects on his relationship with his real-life grandson and playfully calls him ‘cruel.’