An RGS-trained explorer who becomes obsessed with finding the lost City of Z in the Amazon, and disappears during an expedition in 1925.

Percy's wife, who supports his explorations and holds hope for his return after his disappearance.

The eldest son of the Fawcetts, who joins his father Percy on the final expedition into the Amazon.

The second son of the Fawcetts, who later in life investigates his father’s expeditions and publishes "Exploration Fawcett."

Jack Fawcett’s best friend, who accompanies the Fawcett expedition and vanishes with them in 1925.

Grann’s guide in the Amazon, essential to Grann's journey to retrace Fawcett’s path.

An archaeologist who provides Grann with evidence that supports Fawcett’s theories about an ancient Amazonian civilization.

A banker who previously undertook an expedition in search of Fawcett, later offering Grann advice for his own journey.

Chief of the Kalapalos who guides Grann and his team into Xingu National Park.

A loyal companion to Fawcett on multiple Amazon expeditions, known for his resilience and adventurous spirit.

A fellow explorer who joins Fawcett on a 1911 expedition but later publicly criticizes him.

A wealthy American explorer regarded by Fawcett as a rival due to Rice’s advanced resources and technology.

RGS map curator who supports Fawcett throughout his career and after his disappearance, even participating in spiritual sessions.

Fawcett’s granddaughter, who preserves his logs and diaries, serving as a source of information for Grann.

An elderly Bakairi woman who recounts her childhood memories of encountering Fawcett’s expedition in 1925.

A member of Fawcett’s 1920 expedition who struggles with the harsh conditions and eventually returns home safely.

A promoter who secures funding for Fawcett’s final expedition but proves unreliable due to his personal vices.

Leads the first search expedition for Fawcett in 1928, concluding with the theory of local Indigenous involvement in the disappearance.

Claims to have seen Fawcett alive in the jungle, later disappearing during a related search.

David Grann’s wife, who highlights the personal risk involved in his Amazonian journey.