|First appearance:||10-4, 10-10 Episode 13: "Marine mammal of a half fish who treason"|
Subtitle: Half fish, half man (半魚人, Hangyojin)
- Height: 2.1 m
- Weight: 85 kg
- Origins: Earth
Gilmer was once a marine fish/mammal that noticed a ship has sunk near its territory. Gimer then decided to transplant one of the human's brains to him making Gilmer half fish half human.
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