Metphies is an Exif archbishop and a colonel aboard the interstellar emigration ship Aratrum. He is one of the three alien races that sought refuge with humanity after Godzilla drove them from Earth. As a member of the Exif, an ostensibly religious and nomadic species, Metphies presents himself as a calm, gentle, and devout figure who offers spiritual guidance and strategic counsel to the human crew. Beneath this serene exterior, however, he is a self-righteous and calculating manipulator whose primary motivation is the propagation of his faith and the summoning of a greater being his people revere. He believes that his race’s purpose is to convert all civilizations to their religion, which involves invoking a cosmic entity known as Ghidorah, whom he describes as a force more terrifying than Godzilla.

Throughout the film, Metphies positions himself as a confidant to the human commander Haruo Sakaki. He supplies Haruo with classified intelligence about Godzilla’s vulnerabilities, arranges for his release from confinement, and later promotes him to commander when battlefield leadership falters. His role is that of a subtle influencer who steers events from behind the scenes, often by offering cryptic warnings that align with his hidden agenda. When the Bilusaludo race creates Mechagodzilla City using self-replicating nanometal, Metphies warns Haruo that the technology will ultimately consume the Earth if not destroyed. He argues that the Bilusaludo’s obsession with logic and machinery blinds them to the greater danger, and he urges Haruo to preserve his humanity rather than allow himself to be assimilated. This advice directly influences Haruo’s decision to destroy the city’s command center, rendering the nanometal inert.

Metphies’ key relationships are defined by his dual role as both a trusted advisor and a concealed antagonist. He works closely with Haruo, earning his trust through apparent loyalty and shared goals, while simultaneously guiding events toward the eventual arrival of Ghidorah. He clashes ideologically with the Bilusaludo leader Galu-Gu, who believes that transcending human limits through technological fusion is the only way to defeat Godzilla. Metphies, in contrast, views such reliance on machines as misguided and ultimately irrelevant to the larger cosmic design he serves. His relationship with the Houtua people, the indigenous survivors on Earth, is less direct, but he acknowledges their spiritual connection to the land and their role as custodians of an older order.

In terms of development, Metphies begins the story as a quiet, supportive figure who appears to be a stabilizing force amid chaos. Over the course of the film, his true nature becomes more evident as he reveals his awareness of Ghidorah and his willingness to manipulate others to further the Exif’s religious mission. By the end, he is shown actively constructing a cult that venerates Haruo as a chosen hero, laying the groundwork for the next stage of his plan. His development is marked by a gradual shift from passive advisor to active orchestrator, though he maintains his calm demeanor throughout.

Notable abilities attributed to Metphies include his extensive knowledge of Godzilla’s biological weaknesses, which he shares with Haruo, and his deep understanding of ancient threats such as Ghidorah. He also demonstrates the capacity for telepathic communication, as seen in his interactions with the Houtua twins and in his ability to convey ideas without direct speech. His most significant ability, however, is his persuasive and charismatic influence, which enables him to build a following and subtly redirect the actions of those around him. He is portrayed as highly intelligent, analytically sharp, and emotionally detached, qualities that allow him to execute long-term schemes without revealing his true intentions.