Gamera vs. Jiger

A colossal, turtle-like kaiju who defends Earth from Jiger. He withstands Jiger's quills and a heat ray, recovers from near-fatal injuries, and ultimately defeats Jiger by using the statue as a weapon. His resilience and willingness to endure pain highlight the film's focus on heroism beyond human limits.

A parasitic kaiju who arrives to claim the statue, armed with quills and a devastating heat ray. She incapacitates Gamera during their initial fight and later implants a parasitic infant inside his chest, triggering a desperate medical crisis. Her reliance on sound and destruction makes her a relentless and formidable antagonist.

A scientist involved in studying the statue's effects and the monsters. He coordinates examinations of Gamera and collaborates with the kids and other researchers to understand the parasitic infant inside Gamera. He represents the steady, methodical approach that underpins the film's scientific response.

A scientist associated with Dr. Williams, contributing to the team’s understanding of the crisis. Her presence underscores the collaborative effort between researchers in the race to save Gamera and stop Jiger.

A human ally involved in the Expo '70 crisis, coordinating with scientists and authorities as the statue and kaiju threat unfold. He represents the civilian side of the response, bridging everyday citizens with the extraordinary danger.

A member of the Kitayama family linked to the Osaka backdrop and the unfolding events. She contributes to the narrative through the family’s perspective and participation in the crisis.

A member of the Kitayama family whose presence ties the human side of the Expo narrative to the events at Wester Island and Osaka. He embodies the civilian experience amid the monster crisis.

A scientist contributing to the understanding of the statue’s effects and the Gamera-Jiger conflict. He works alongside the other researchers to decipher the parasite and the kaiju’s biology.

A diplomatic figure present at Expo '70, representing international involvement in the World's Fair and the event’s global significance as monsters threaten the site.

A child character who participates in the crisis with the walkie-talkie and miniature sub, symbolizing the resourcefulness and courage of the younger generation.