Los Angeles: Daniel Gerson, who co-wrote "Monsters, Inc" movies and "Big Hero 6", died at his home last weekend. He was 49. According to a family statement, Gerson had been battling brain cancer, reported Variety.

The screenwriter frequently collaborated with Robert L Baird. Together the duo co-wrote "Monsters, Inc" and its prequel, "Monsters University", as well as "Big Hero 6", which won the Oscar last year for animated feature.