Jungle Moon Men

Ellen Marsten's ally who joins the jungle expedition to rescue Marro. He provides steady leadership and practical judgment under pressure; after Marro's death, he becomes the foil who keeps the mission moving toward safety and accountability.

An Egyptian archaeologist who hires Weissmuller to explore the jungle and locate Marro. Resourceful and determined, she leads the group through danger but is captured along with Weissmuller in Oma's temple.

An acquaintance of Ellen who is chosen as Oma's chief religious official by the Moon Men. He meets a fatal end when the jungle perimeter is breached and a voodoo ritual seals his fate.

A Moon Man pygmy who interrogates Weissmuller and reveals that Marro was fed a fatal potion to stop him from escaping Baku. He serves as an insider who exposes the dangers of the Moon Men.

The adventurer-protagonist who leads the escape from Oma's temple and orchestrates the rescue mission. He sacrifices himself to ensure the others' safety and to expose the impossible truth of Baku to the mainland.

The Moon Goddess revered by the Moon Men; a being of immortality whose weakness is sunlight. She commands the temple and plays a pivotal role in the fate of the explorers, ultimately dissolving into dust in the sun.

The villainous mastermind who manipulates the expedition for treasure. He pockets jewels and attempts to flee, only to be felled by the Moon Men's forces and a pride of lions.

Santo's ruthless right-hand man who commands Weissmuller to guide them into Oma's temple. He meets a grim end alongside Santo during the climactic pursuit.