After Eiji inserts three into the, he scans them with the, and then holds the O-Scanner up to his chest, he transforms into Kamen Rider OOO. Like before him, OOO has multiple combinations of forms he can access referred to as Combos ( コンボ, Konbo). OOO's Full Combos. From left to right: Latorartar, Putotyra, Sagohzo, Tatoba, Gatakiriba, Burakawani, Shauta, and Tajadol Each aspect of a combination of Core Medals gives OOO different powers and weaknesses. In a fight, if a particular section of OOO receives a significant amount of damage, the power of that section will be disrupted.
Kamen Rider OOO TaToba-Regret Nothing ~Tighten Up Full.
If it takes further damage, the power will cut off completely and the section's corresponding Medal will be forcefully ejected from the OOO Driver, canceling the transformation. In addition, full Combos (that is, three from the same set) are incredibly taxing on Eiji's body, as they embody the full power of the corresponding Greeed.
Fatal fatigue is risked when using more than one full combo (as first seen in episode 15). However, Eiji has developed a resistance over time, as he were capable to using all of the combos at his disposal and their individual ( スキャニングチャージ, Sukyaningu Chāji) in quick succession.
Whenever a Scanning Charge is announced, Eiji will proclaim 'Seiya' ( セイヤ, 'Seiya') seconds before the opponent is defeated. Except for the Tatoba, Tamashii, and Super Tatoba, the only combinations referred to as 'Combo' are those comprised of animals of the same category/family. Mixed category combinations are referred to as Random Combos ( ランダムコンボ, Randamu Konbo).