[5] Inslee debuted on stage in 1892 as an understudy in Boston in the Grand Opera House Company's production of Rosedale.

[5] He first acted in films in 1908, and found work with the Edison, Essanay, Biograph, Bison and Kalem studios.

He acted in films alongside Charlie Chaplin, Harold Lloyd that were directed by Edwin S. Porter, D.W.

[6] In 1914, he married Violet June Ake (née Watson), sister of actress Barbara La Marr.

Months later, she too divorced Inslee, on the grounds that he was "not only a peculiar man, but cruel in not letting her hug, caress and kiss him.