Ultraman Tregear is a major antagonist in the Ultra series, including Ultra Galaxy Fight. He is a powerful and enigmatic Ultraman from the Land of Light who became consumed by nihilism and resentment, turning against his former ideals. Tregear is known for his cunning, manipulation, and immense combat ability, often serving as a destabilizing force behind major conflicts. In Ultra Galaxy Fight, he appears as a dangerous schemer whose actions influence events across the wider Ultraman universe.