Rovin has written encyclopedias about popular culture, including The Encyclopedia of Superheroes (Facts On File, 1985), The Encyclopedia of Super Villains (Facts On File, 1987) The Illustrated Encyclopedia of Cartoon Animals (Prentice Hall, 1991), and The Encyclopedia of Monsters (Checkmark Books, 1990). He has worked on biographical and film books on such performers as Kelsey Grammer, Lana Turner, Adam West, Ellen DeGeneres, Jackie Chan, Charlton Heston, Elvis Presley, Sylvester Stallone, Richard Pryor, Luke Perry, Jason Priestley, and Julio Iglesias, and on the animated series The Simpsons. Additionally, he has written quiz and joke books.