|Anime Debut||Episode 31|
Oodako is the animal partner of the Cloud Arcobaleno, Skull. Its tentacles follow Skull's hand and finger movements. Skull uses Oodako for the majority of his attacks.
Once, when Skull raided Mafia Land with the Carcassa Famiglia, Reborn shot Skull's hand with a bullet, enlarging Skull's hand and confusing Oodako. Oodako didn't recognize the command, and Skull lost control of it.
- Oodako is the largest Animal Partner. The other Partners are small or medium-sized pets.