AppearanceEditRaijinmaru looks like a regular capybara, with a big head, a big body, and short, thin legs. Her body is covered mostly in light brown fur, with darker fur covering the tip of her snout and her limbs.
Not much is known about Raijinmaru's personality, but she seems to a very lazy and gluttonous capybara.
- Raijinmaru is actually female, contrary to Tamakoma members' beliefs.
- "Raijin" (雷神?) is the Shintō god of lightning, thunder, and storms. "Maru" (丸?), meaning "perfection" or "full circle", is a common suffix for Japanese male names (despite the fact that Raijinmaru is a female).
- Raijinmaru's name comes from the dog of Yōtarō's favourite television hero.
- According to Border Briefing File, Raijinmaru is both Border's most popular and the least concerned with popularity, while Yuiga is both the least popular and the most concerned with popularity.
- Kazama has been caught on camera attempting to ride, or at least get on, Raijinmaru.
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