- In the 2005-2006 and 2007-2008 Yearbooks.
- In a level 11 Card-Jitsu Power Card.
- In the book Lime Green Dojo Clean.
- On a map in the Ship Hold.
- At the Coffee Shop during the 8th Anniversary Party.
- At the bottom left corner of the renovated Lodge Attic.
- In Club Penguin: Elite Penguin Force: Herbert's Revenge, as an important key item in The Ultimate Mission.
- Octi appeared at the Dojo during the Summer Party (where he made his first appearance), the Summer Kickoff Party, and the Water Party 2008.
- During the Halloween Party 2007, Octi wore a Clown Wig and carried a red Lollipop for the trick-or-treat hunt.
- Octi was on the Pet Shop during the Submarine Party.
- Octi was in the Ninja Hideout during the Christmas Party 2008.
- Octi appeared on the top of the Night Club after the Mountain Expedition 2010.
- Octi's name is the Latin plural for Octopus.
- A smaller version of him is used in the mini-game Aqua Rescue! from Herbert's Revenge.
- A purple octopus, presumably Octi, can be seen on the map in the Ship Hold.
- In Club Penguin Island, an octopus similar to Octi can be seen as a fountain near the waterslide in the Beacon Boardwalk.
- The Inflatable Octopus furniture item from Club Penguin Island was based off of Octi.
- Octi also made an appearance in the Underground Diner.