Its been a while since we have rumors regarding the Dinosaur Greeed, Giru and just recently, DecaEnd's Netarider has just posted more rumors regarding Giru and his subordinate, Rei and the resurfacing of the rumored Real Ankh!
During the summer, Gamel and Mezool will revive. At the same time Rei, Giru and Ankh's real form will show up. Rei is Giru's faithful subordinate, but he's aiming for the Medals as well. The arm Ankh, which currently possesses Shingo Izumi's body, was created from the will of the 10th bird Core Medal.
The real Ankh was planning on letting the arm gather all the Medals and then take them away from the arm, but he feels that Eiji and Ankh are becoming a threat so he starts targeting them.
Giru seems to be trading Cell Medals with Eiji, he is also working with the revived Gamel. When the Greeeds gather all the Medals, a belt is formed. The previous OOO seems to be coming from Europe and his descendant Kuga (Not related to Kamen Rider Kuuga) shows up. Kuga has 6 Medals, 3 of which are Giru's and the other 3 are Rei's. He can also transform into OOO.
Please take these rumors as a grain of salt.