Allen began his professional career in 1992 working with game companies to book publishers. He began working with CCG companies in the early 90’s as he continued to polish his skills in figurative representation within his personal work. As his collectors and client list grew and evolved so did his style and skill throughout the years. His main focus is now on his personal work but also includes concept work for films and television.

Notable clients include Sideshow Collectibles, Tor Books, Paramount Pictures, Fox Film Production, Guillermo Del Toro, Lionsgate Films, Legendary Pictures, Wizards of the Coast, and Hasbro. Allen has won honors with the Art Renewal Center, the Chesley Awards and Spectrum Fantastic Art. His works show in galleries and exhibitions throughout the United States and Europe.

His influences range from the classical figurative work of John William Waterhouse and Norman Rockwell to the highly imaginative art of Zdzisław Beksiński and HR Giger.

He lives with his wife, two children and two dogs on the Gulf Coast.