Jim Carrey has said in the past he was probably done with the “Sonic the Hedgehog” franchise, but now says he has a good reason for changing his mind.

The actor voices villain Dr. Robotnik and Gerald Robotnik in the upcoming sequel, zooming into theaters on Dec. 20.

The chance to play a genius – ‘which is a bit of a stretch’ – and the film’s pay cheque are the reasons Carrey is back on the big screen.