Charles Montague Discombe Sparrow, known by his stage name C. Montague Shaw, was an Australian character actor, often appearing in small supporting parts in more than 150 films. Many of his roles were uncredited.

Undersea Kingdom (1936) is a Republic Pictures 12 chapter film serial released in response to Universal's Flash Gordon. It was the second of the sixty-six serials made by Republic. In 1966, the serial was edited into a 100-minute television film titled Sharad of Atlantis.