Prithviraj Sukumaran, opening up about working with Prabhas in 'Salaar', said that he now knows better why the 'Baahubali' actor is called 'Darling'. "Anybody who has worked with Prabhas will tell you that is what he is, he is an absolute darling. I mean there are nice guys, nice people and then there is Prabhas," Prithviraj added.