Giru

Giru is the dinosaur Greeed. He has aspects of a pteranodon, a triceratops, and a tyrannosaurus. Unlike the other Greeed, he was never seen and only physically appeared as ten Core Medals that were kept under lock an key by the Kougami Foundation, before they were stolen by Kiyoto Maki.

He was first heard in Kamen Rider × Kamen Rider OOO &amp; W Featuring Skull: Movie War Core, creating two Pteranodon Yummy from the end of two desires.

Ultimately, he did not appear in the series proper, but rather as Kiyoto Maki that went through Greeedification, though Maki never did renamed himself to "Giru".

Abilities
As a Greeed, Giru has the ability to create Yummies by placing a Cell Medal into a Medal Insert Slot, his are made using inanimate objects that represent the end of a desire, such as broken dreams. As his abilities lie in negating desire, half of his Core Medals go to Eiji Hino because of his lack of selfish desire and at first took over him whenever he transformed into Kamen Rider OOO Putotyra Combo. He can also travel distances by dispersing into Medals. It is also possible that he can assume a human form.

Etymology
Giru's name comes from from the Japanese word uragiru (裏切る, "to betray"), as he, his Cores, and his Yummy are the opposite of other Greeeds' Yummy by destroying desire rather than embodying it.