"A brilliant and generous performer and one of the coolest to ever do it," Danny Ramirez, who appeared in 'Top Gun: Maverick,' wrote of Kilmer on InstagramVal Kilmer's costars in the Top Gun movies are paying tribute to the actor after he died at 65 on April 1.

Val Kilmer died of pneumonia, his daughter told the AP. He had a previous bout with throat cancer, which took away his voice and much of his ability to speak.