Ok, I've just been rewatching episodes 15 and 16 of Kamen Rider OOO, and got an idea. the majority of the medals in the Gigantic Turtle Monster were Mezool's... 7 of them. The only time these were removed were when the monster blew up, although there were also far fewer cells... which makes no sense, given the massive amounts needed to create the creature in the first place.
So this story's nail is that for some reason (maybe the fight finishes quicker) there are actually quite a few cell medeals when the monster blows up... enough for Mezool to reform her body, although she still looses most of her cores... but now she has a dilema, she's still weak, she's been backstabbed by both Kazari and Uva, and knows they'll probably do it again, and if she goes out on her own, they'll likely hunt her down. With no real other choice, she ends up trying to ally with Eiji and, much to both's irratation and worry, Ankh. Essentially this means that Eiji doesn't get the Unagi Medal initially, but instead gets the Shachi Medal in the form of Mezool. Mezool essentially becomes a secondary helper role (not her decision, Ankh points out that if she wants some cell medals and to hold on to the blue medals they obtain, she needs to help out).
This also makes Kazari a bit more cautious on occasion when fighting Eiji, knowing that any blue medals he loose will be used by Mezool at one point or another. Uva is less so, because unlike Kazari, he's not actually using her medals. At one point there should probably be a betrayl/strike out on own arc, like when Ankh decvided he didn't need Eiji and got beaten up by Uva for his troubles. Although given Mezool, it'll probably a very temporary situation or some sort of plan since she runs into slightly worse problem than striking out at the start.
And then theres the Other Ankh and Dino Medal plot points, the former of which I think would remind Mezool a little of Gamel. I also believe, given her nature, Mezool is likely to become friendlier faster, not much given that she is a Greeed and Eiji IS OOO, but friendlier none the less.
So this story's nail is that for some reason (maybe the fight finishes quicker) there are actually quite a few cell medeals when the monster blows up... enough for Mezool to reform her body, although she still looses most of her cores... but now she has a dilema, she's still weak, she's been backstabbed by both Kazari and Uva, and knows they'll probably do it again, and if she goes out on her own, they'll likely hunt her down. With no real other choice, she ends up trying to ally with Eiji and, much to both's irratation and worry, Ankh. Essentially this means that Eiji doesn't get the Unagi Medal initially, but instead gets the Shachi Medal in the form of Mezool. Mezool essentially becomes a secondary helper role (not her decision, Ankh points out that if she wants some cell medals and to hold on to the blue medals they obtain, she needs to help out).
This also makes Kazari a bit more cautious on occasion when fighting Eiji, knowing that any blue medals he loose will be used by Mezool at one point or another. Uva is less so, because unlike Kazari, he's not actually using her medals. At one point there should probably be a betrayl/strike out on own arc, like when Ankh decvided he didn't need Eiji and got beaten up by Uva for his troubles. Although given Mezool, it'll probably a very temporary situation or some sort of plan since she runs into slightly worse problem than striking out at the start.
And then theres the Other Ankh and Dino Medal plot points, the former of which I think would remind Mezool a little of Gamel. I also believe, given her nature, Mezool is likely to become friendlier faster, not much given that she is a Greeed and Eiji IS OOO, but friendlier none the less.