Oyakamui was blue two headed serpent in the base and the tip and also he has two pairs sharp wing in base head and tip head.
In episode 31 , Sayaka used him to battle agaisnt Tayura's minion ,Tsumuna and win because he used inhale ability to absorb Tsumuna's body.
In episode 36 , He battle agaisnt Enryuu and lose and Sayaka give it to Sanshiro.
In episode 38 , He battle agaisnt Hagane but lose because Hagane strike him by Light strike.
In Episode 39, He helped Sanshiro battle Ghost Mask but defeated.
In Episode 49 , He,Hagane,Jinba,Hudojin,Enno and Shining Moon battle agaisnt Nue and win and combine his power, Ootengu, and other Gekifu to summon Hinoe.
Inhale Attack: Oyakamui absorb enemy to his body and prevents them from dodging this attack it is Oyakamui powerful attack.
Sharp wing Attack: Oyakamui strike his foe with two pairs sharp wing.
Twining Attack: Oyakamui twining his enemy with his long body and prevents them from moving.