Octi is a purple stuffed octopus wearing a small black hat. It is Bubbles' most prized stuffed animal. As seen in The Powerpuff Girls Movie, it was given to Bubbles by Professor Utonium, Bubbles' creator/father. The male Octi was voiced by Kate Micucci in the reboot episode Toy Ploy, However Octi doesn't have his hat in the reboot though the intro shows Octi wearing his hat.
- Crime 101 (pilot)
- Monkey See, Doggie Do
- Mommy Fearest
- Octi Evil
- Fuzzy Logic
- Boogie Frights
- Dream Scheme
- Daylight Savings
- The Powerpuff Girls' Best Rainy Day Adventure Ever
- Cover Up
- Slumbering with the Enemy
- Child Fearing
- Ploys R' Us
- In the original series, Octi has 2 episodes revolved around it, Octi Evil and Octi-Gone. In the reboot, he had two episodes focusing on him, Little Octi Lost and The Oct-Father.
- The only time where Octi's facial expression changes is in Octi Evil, which is a wicked smile when HIM takes over it and begins destroying Townsville as opposite to its "lazy" smile.
- Despite being an octopus, Octi only has four legs. This may have been due to eight legs being difficult to animate.
- In the last two seasons of the 1998 series, he has six legs.
- Octi wears a hat similar to the Mayor's hat.
- In The Powerpuff Girls' Best Rainy Day Adventure Ever Octi's hat looks like the Mayor's hat because it's floating
This is Octi's 2016 Debut