An employee of The Walt Disney Company for more than 65 years, during which saw the creation of nearly every Disney animated feature and theme park. Born in Cedar Rapids, Iowa, Hench attended numerous art and creative schools across the country, including the Art Students League of New York, the Otis College of Art and Design in Los Angeles, the San Francisco Art Institute in San Francisco, and the Chouinard Art Institute in Los Angeles.

Starting in 1939 as a story artist, he weaved his way through the animation department working in areas including backgrounds, layout and art direction, effects animation and special effects. Hench was respected by Walt Disney as one of the studio's most gifted artists and teamed him with Salvador Dalí on the animated short Destino, a project begun in 1945 that was not completed and released until 2003. Hench was also Disney's "official portrait artist" of Mickey Mouse, painting the company's portraits for Mickey's 25th, 50th, 60th, 70th, and 75th birthdays.