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Pia Decem PEAK (ピア・デケム・ピーク Pia Dekemu Piiku?) is a Giant Mechanoid formed when Pia Decem performs Giga Fusion with Pia Decem PIT. This mode is slightly larger than King J-Der, its counterpart, and is capable of hovering in atmosphere (its flight capabilities are questionable due to its lack of overall mobility). The pair of runways/decks on PIT have been split, resulting in the number of fighters that can be deployed at once doubling. Like PIT, it can deploy blue Maser Fighters, yellow Anti-Meson Fighters, and red ES Fighters.