Mark Bellomo is one of the top toy experts in the country, having written hundreds of magazine articles and numerous books. He is considered an authority on action figures, particularly Star Wars, G.I. Joe, and Transformers. He is the author of The Ultimate Guide to G.I.Joe, 1982-1994; The Ultimate Guide to Vintage Star Wars Action Figures, 1977-1985; Totally Tubular '80s Toys; and served as editor of Toys & Prices. Bellomo is also featured in The Collectable Spectacle on YouTube.