In a recent interview with mid-day.com, Tanhaji actor Ajay Devgn compared Saif Ali Khan to the mighty villain Thanos from Avengers. He said that a strong hero needs an even stronger villain and Saif in Tanhaji is exactly like that. Watch this video to know more about Tanhaji: The Unsung Warrior from the lead stars of the film, Ajay Devgn and Kajol.