Bradley

Co-tan

Bradley and Co-tan share a deep romantic bond, with Co-tan being a native woman who becomes his lover and ally.

Luata

Bradley and Luata are allies, with Luata often assisting Bradley in navigating the dangers of the lost land.

Thomas Billings

Bradley and Thomas Billings are fellow explorers and friends, working together to survive and understand the strange land.

An-tak

An-tak is a hostile native who frequently clashes with Bradley, representing a physical and cultural threat.

Ajor

Ajor and Bradley are allies and friends, with Ajor often aiding Bradley despite her primary bond with Billings.

Ace

Ace and Bradley are loyal companions, with Ace being a dog who faithfully follows and protects Bradley.

Olson

Bradley and Olson are shipmates and friends, working together on the submarine and in the wild.

Galu

Bradley and Galu are initially adversaries, with Galu being a hostile native chief who opposes the outsiders.

Sinclair

Bradley and Sinclair are crewmates and allies, sharing the challenges of survival in the prehistoric land.

Jimmy Hollis

Bradley and Jimmy Hollis are shipmates and friends, relying on each other during their time in the lost land.

Co-tan

Bradley and Co-tan share a deep romantic bond, with Co-tan being a native woman who becomes his lover and ally.

Luata

Bradley and Luata are allies, with Luata often assisting Bradley in navigating the dangers of the lost land.

Part I: The Land That Time Forgot

Lieutenant who assists in the capture of the U-boat.

II

Mate of the tug, assists in the capture and planning.

III

Lieutenant; assists Tyler and discusses the sabotage incidents.

IV

Lieutenant and companion; assists in navigation, tastes the freshwater, and helps identify the river's source.

V

First lieutenant under Tyler, helps persuade Lys to continue eating after Olson's comment.

VI

Leads exploration expeditions to the cliffs; reports on the abundance of prehistoric life and the impossibility of scaling the cliffs.

I

The mate of the U-33, mentioned as possibly still alive in Caspak along with other members of the original party.

Part III: Out of Time’s Abyss

The narrator of the tale, recounting his experiences in Caprona.

I

Leads the expedition from Fort Dinosaur; saves Tippet from a bear; mysteriously disappears from camp.

II

Captured by Wieroos while on guard duty; taken to the city of Oo-oh; bound and carried to the Blue Place of Seven Skulls; later allowed to move about the city.

The Blue Place of Seven Skulls

Explores the Wieroo city, fights a Wieroo to save a girl, and learns about Caspak's evolution from An-Tak.

IV

Reflects on his feelings for the girl, builds a cave shelter, hunts, and plans escape to the mainland. Retrieves his pistol from the yellow door chamber.

V

Bradley continues his daily routine of swimming, shaving, and teaching the girl English. He devises a plan to capture Wieroos and force them to guide him south. He later attacks von Schoenvorts and his men to rescue the English prisoners.