Born in Barmouth, Gwynedd, north Wales while his parents were travelling, he emigrated from his home in Cornwall to Canada when he was three years old.

He painted landscapes from his travels to Italy, France, Spain, Portugal, the British Isles, Massachusetts, and Cape Breton Island.

One of his works, representative of his impressionistic style, At the Base of a Millrace, Streetsville, Ontario, is adventurous in that it attempts to create the illusion of stone and water in a novel way.

Another of Dingle's comic characters was the suave tuxedo-clad masked detective "The Penguin", a Canadian superhero distinct from the well-known nemesis of Batman.

To avoid conflicts with Batman's publishers, this character was renamed The Blue Raven to allow efforts to reach an American audience.