Domo, the main character, is described as "a strange creature that hatched from an egg." [5] Domo's favorite food is Japanese-style meat and potato stew, and he has a strong dislike forapples, because of an unexplained mystery in his DNA. Domo can only communicate via producing a low-pitched noise which sounds somewhat like his own name, but other characters appear to understand him. Domo-kun is known to pass gas repeatedly when nervous or upset. [5]
Domo lives in an underground cave with Mr. Usaji [6][5], known in Japanese-language versions as Usajii (うさじい?), a portmanteau of the words usagi (うさぎ?), (rabbit), and jii (じい?) (old man, grandpa). Mr. Usaji is a wise old rabbit who loves to watch television and drink astringent green tea. Mr. Usaji is not into any "new" materials, and does not own a telephone. In terms of fashion, Mr. Usaji focuses on materials instead of shapes. Mr. Usaji's favorite food is carrots, and his least favorite food is "something that is meaningless."
Also in the cave live two bats, a mother named Maya [6] (Shinobu (しのぶ?) in the Japanese version) and her child Mario (Morio (もりお?) in the Japanese version). Maya has a drinking problem; her favorite foods are seasonal while her least favorite food is, ironically, alcohol. Mario's favorite food is Japanese-style tomato spaghetti, while his least favorite food is shiitake mushrooms.[6][5]
The other main character in the shorts is a weasel girl named Tashanna [6] [5] (Tā-chan (たーちゃん?) in the Japanese version). Tashanna, 17 years old, is a weasel who aspires to be a fashion stylist or model in Tokyo and is always using technology (televisions, mobile phones, and cameras). In English Tashanna has a "weaselly accent" (いたちなまり itachi namari?) and ends her sentences with "y"s. In the Japanese version, she ends her sentences with "chi" (ち) [7]. According to the English site, she is also looking for a boyfriend. Tashanna's favorite food is apricot and mint tarts, and her least favorite food is sea urchin. [5] The Japanese name originates from the word "multichannel" (多チャンネル tachanneru?) of digital broadcasting.
Bear Boy (Kogumagorō (こぐまゴロー?)), also known as A Little Bear (くまのこ Kuma no ko?, literally "A bear cub"), is one of Domo's friends from the neighborhood; the timid cub enjoys playing baseball.[6][5]
Hee (Flower One (花一 Hanaichi?)) and Haw (Flower Two (花二 Hanaji?)) are pixie twins from a flower. Domo is the only individual who can see them. [6]
The Fox Trio consists of Esther (Esuko (エスコ?)), Brother Fox (あにきち Aniki-chi?), and Fox Boy (Konjirō (コンジロー?)). Esther, the youngest member, enjoys producing crocodile tears, plotting schemes, and causing havoc. Brother Fox, the eldest member, dutifully cares for his youngest siblings and feels upset when referred to as "short-legged" (短足 tansoku?). Fox Boy, having a quiet demeanor, converses with Domo and Bear Boy and prefers to read.[5][7]
Hungry Bear (はらぺこぐま Harapekoguma?), a large and powerful bear, feels too hungry to take advantage of his strength.[5]
The Ghost (ヒュ~たろう Hyūtarou?) randomly appears and disappears
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