Hawk of the Wilderness (1938) is a Republic Movie serial based on the Kioga novel of the same name by pulp writer William L. Chester.

Kioga is very similar to the character of Tarzan, whom Herman Brix had also played on film in the 1935 Edgar Rice Burroughs-produced serial The New Adventures of Tarzan.

Plot
Dr Lincoln Rand Sr, leading an expedition to an uncharted island in the Arctic circle that may be the ancestral home of all Native Americans, is shipwrecked. The only survivors are Lincoln Rand Jr, Dr Rand’s son and his servant Mokuyi.

Years later, a message from the sinking ship is found and an expedition sets out to find the island again. Part of the crew, led by smuggler Solerno, mutinies when they reach the island, abandoning Dr Munro and his expedition. Dr Munro and company are rescued by Lincoln Rand Jr, alias Kioga, the adult son of Dr Rand, who has been raised on the island by Mokuyi.

Cast
Herman Brix as Lincoln Rand Jr/Kioga (“Hawk of the Wilderness”), son of Dr Lincoln Rand Sr, a survivor of the initial shipwreck and raised by Mokuyi on the island
Ray Mala as Kias, Kioga’s servant
Monte Blue as Yellow Weasel, villainous shaman opposed to Kioga, the Munros and the Smugglers
Noble Johnson as Mokuyi, the former servant of Kioga’s late father. Rescued Kioga and, as the only other survivor of the shipwreck, raised him on the island
William Royle as Manuel Solerno, smuggler searching for wealth on the uncharted island
Tom Chatterton as Dr Edward Munro, a scientist who leads an expedition to discover the fate of his old friend Dr Rand
George Eldredge as Allen Kendall, a member of Dr Munro’s expedition
Patrick J. Kelly as William ‘Bill-Bill’ Williams, another member of Dr Munro’s expedition
Dick Wessel as Dirk
Fred Toones as George, Dr Munro’s servant
Tuffie the dog as Tawnee
James Dime as Dark Cloud