Robin Williams "felt so deeply for so many people," one of the last people to work with the Oscar winner told Good Morning Britain.
Actor and comedian Hal Sparks, who worked with Williams two weeks ago, paid tribute to him, and said: "I think he just felt so deeply for so many people. The hurt he may have felt in his life wasn't just about him."
Robin Williams' daughter has left social media after receiving abusive messages in the wake of her father's death.
Radio station talkSPORT has apologised after presenter Alan Brazil said he lacked sympathy for actor Robin Williams, who took his own life.
He played a wide range of roles but Robin Williams captured the hearts of millions with his performances.