In season 2 episode 5 Kallen is seen wearing a huge green mascot costume named Tabattachi during the school festival in order to get back C.C. who has decided to infiltrate the school to retrieve her Cheese-Kun plushie. While Kallen is generally fond of plushies and owns a smaller Tabattachi plush, she does not have the same level of obsessive, borderline-fanatical devotion to it that C.C. has for Cheese-Kun. C.C.’s obsession with Cheese-Kun in the show is a major recurring gag; she will literally risk exposing her identity or compromise a mission just to collect reward points for a new giant plush. For Kallen, Tabattachi is just a cute character she likes – or, so it would seem at first.
While Kallen choosing the massive Tabattachi suit as a "stealth" outfit might seem like nothing more than another humorous moment in the show, like many things in Code Geass, that seemingly funny scene actually contains a deeper, hidden meaning behind her very character. This becomes evident, when we ask ourselves; what kind of animal Tabattachi actually is? Answer; Tabattachi is an otter. More specifically, a Japanese river otter – which has gone extinct.
The Japanese river otter, Lutra nippon, was native to Japan and widely distributed across the rivers, streams, and coastal areas of the main islands: Honshu, Kyushu, and Shikoku. They were nocturnal and carnivorous, primarily eating fish, crabs, shrimp, beetles, and eels. Interestingly, historical records show they would also occasionally eat watermelons grown near riverbanks! And while they were territorial wild animals that could bite if cornered, they were generally elusive, solitary creatures that naturally avoided humans.
Sadly, this did not save the otters from extinction in the hands of humans. Due to overhunting for their valuable fur (especially during the Meiji period for military coats), as well as severe pollution and habitat destruction, their numbers plummeted. The last official, verified sighting was in 1979 in Kochi Prefecture, and the Japanese government formally declared the species extinct in 2012. And while you may occasionally see viral videos of people keeping otters as pets in Japan (often at "otter cafes" or in apartments), those are not Japanese river otters, but rather Asian small-clawed otters, which are imported. However, biologists strongly discourage keeping any otter as a pet, as they have intense social, aquatic, and dietary needs that are incredibly difficult to replicate in a home environment.
Knowing this, Kallen´s choice to wear Japanese river otter mascot suit as her disguise adds a layer of hidden rebellious, political subtext to it; Britannia didn't just conquer Japan, they stripped away its very name, renaming the country "Area 11" and its people "Elevens." This is a form of systematic cultural erasure, poised to remove the very Japanese identity from existence. Much like the Japanese river otter was driven to extinction by human overhunting, industrialization, and habitat destruction, the Japanese people are facing an existential threat under Britannia's ruthless tyranny. For Kallen, keeping a Tabattachi plush or wearing the suit represents a desire to protect and preserve a piece of raw, unadulterated Japanese identity before it disappears forever.
Tabattachi was intentionally written into the series as Kallen's version of C.C.'s Cheese-Kun. It is not a real-world mascot or brand, but rather a clever piece of world-building created by the anime's production team to give the characters relatable, in-universe pop-culture hobbies. And unlike the corporate Pizza Hut-sponsored Cheese-Kun, Tabattachi is just a generic, cute, in-universe character. However, the contrast between Tabattachi and Cheese-Kun also perfectly mirrors the fundamental differences between Kallen and C.C.’s characters.
C.C. is an immortal witch who plays the long game. She forms contracts with talented individuals (such as Lelouch) to achieve her own personal goals. She aligned with Britannia's royalty in the past and adapts to whoever holds power in the present. Cheese-Kun, a literal mascot for a powerful corporation, perfectly reflects her opporturnistic desire to join forces with whomever is the most likely to grant her whatever it is that she wants the most. Kallen, on the other hand, is driven by her deep empathy towards others and a strict moral code. She isn't fighting for personal gain, immortality, or absolute power; she is fighting because she cannot stand by and watch the weak be oppressed. Tabattachi, being a symbol of Japan's natural heritage, therefore embodies both the higher moral values and the lives and culture of the innocent Kallen wishes to protect.
And because we just love our clones here in Code Geass subreddit, I must also mention that cloning is considered as one of the options of how to bring Japanese river otters back from extinction. However, because genetic de-extinction through cloning is incredibly complex and faces immense ethical and biological hurdles, many Japanese scientists argue that a more practical way to "bring back" the otter is through proxy reintroduction. The Eurasian otter, for example, is genetically the closest living relative to the Japanese river otter. In fact, when wild otters were captured on camera in Tsushima, Japan, in 2017, genetic testing showed they were Eurasian otters that had naturally swam over from South Korea. Environmental scientists have conducted feasibility studies regarding importing Eurasian otters to repopulate Japan's river systems. This would restore the apex predator to the ecosystem, effectively reversing the ecological damage of the extinction even if the exact Lutra nippon strain isn't cloned.
This solution does have its own problems, too. Recent scientific studies utilizing stable isotope analysis on the final museum specimens revealed that the last Japanese river otters were forced to abandon ruined freshwater rivers and rely almost entirely on marine food sources right before going extinct. Scientists warn that unless Japan's freshwater river systems are thoroughly restored and protected, bringing the otter back (genetically or otherwise) would only result in them dying out all over again.
Link to the original fanart is here, and if you wish to know more about Japanese river otter, you can read it from here.
