|This article is about a/an type of monster in Kamen Rider Den-O.|
Whenever an Imagin is defeated, they sometimes reform their bodies along with a berserk state of mind, warping into one of three types of massive creatures called Gigandeath (ギガンデス Gigandesu, from "Gigantes"). The number of Gigandeaths emerging from an Imagin can be from a single Gigandeath, to two different types, to an entire army of them. These monsters are mindless and are filled by the urge of destroy. Whenever a Gigandeath emerges, only a Time Train can take it out. All three Gigandeaths are augmented into the Nega DenLiner's arsenal.
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