This is a list of the characters in the "Ojarumaru" anime series.
Main characters.
Ojarumaru Sakanoue.
Voiced by: Hiroko Konishi (Japanese; Series 1-3), Chinami Nishimura (Japanese; Series 4-present)
 is the title character and main protagonist of the series and is a five-year-old Heian era prince. Born to a noble family in Yōsei-kai (妖精界, lit. "Fairy World"), he is spoiled, whimsical, laid-back, and a little selfish. He speaks politely and refers to himself as "Maro" (マロ) and other people as "Sochi" (ソチ). He ends most of his sentences with the archaic polite copulas "de ojaru" (でおじゃる), "ka no" (かの), "nou" (のう), "ja" (じゃ), "ja no" (じゃの), or "no ja" (のじゃ), along with the archaic "tetamo" (てたも). During the beginning of the series, he accidentally time-warps over to modern Japan and lives in Gekkō-chō (月光町, lit. "Moonlight Town") with Kazuma Tamura and his parents. Later in the series, he time-warps back and forth between the present time and the Heian era through the full moon's reflection at the Tsukiyo Ike (月夜池, lit. "Moonlit Night Pond"). He often relaxes on his 3 piece set, which consists of a pedestal, a byōbu, and an armrest. His favorite food is pudding and first tried it when Ai made it for him. He wears a fourth-dimensional eboshi hat, which he often uses to store rare objects. He dislikes using his energy, water, and his fiancée, Princess Okame. He tends to utter "Oja" (おじゃ) when surprised, confused, or getting someone's attention and "Ojazozo" (おじゃぞぞ) whenever he sees Okame. Unlike most of the characters in the series, he does not address his acquaintances with honorifics, with the exception of Ai (as Ai-chan), Komachi (as Komachi-chan), and Otome (as Otome-sensei).
Denbo Sanjuurou.
Voiced by: Rie Iwatsubo (Japanese; Series 1-7), Narumi Satou (Japanese; Series 8-present)
 is a firefly, referred to as a "Densho-Botaru" (電書ボタル). He was born in the 30th generation of the Densho-Botaru family, which has been used by the Sakanoue family for generations. He delivers messages and reports between Yōsei-kai and the present time. He is Ojarumaru's caretaker and was asked by Ojarumaru's parents to look after him in Gekkō-chō. He is very polite and addresses everyone with the honorific "sama" (様). He ends most of his sentences with the polite copulas "masu" (ます) or "de gozaimasu" (でございます). He is quick to fall in love with insects, animals, food, plants, and even objects, but gets rejected most of the time. His recurring girlfriend is Marie's parrot named Akemi. He loves onigiri and his special technique for making them is "Hissatsu Nidan Nigiri" (必殺二段にぎり).
Kazuma Tamura.
Voiced by: Yuriko Fuchizaki (Japanese)
 is Ojarumaru's best friend. He is 8 years old and is a 2nd grader at Gekkō Shōgakkō (月光小学校, lit. "Moonlight Elementary School"). He is the only child of Ai and Makoto. He is a very good athlete and loves to play soccer. He is really good friends with Ojarumaru, almost like brothers. He loves to collect all kinds of rocks and has a collection of them in his room. He is afraid of dogs. Ojarumaru always rides on his back or his backpack whenever they are out together.
Kooni Trio.
 consists of three young oni, who were sent by their father, Great King Enma, to retrieve his scepter from Ojarumaru. They constantly come up with plans to retrieve the scepter, but they all fail due to Ojarumaru outsmarting them. Sometimes they are seen wearing various disguises, which are primarily set to fit the episode's plot, as part of their plans to trick Ojarumaru into returning the scepter. Since they left their battle sticks at Enma World (エンマ界 "Enma Kai"), they use giant cutlery as weapons.
Aobee.
Voiced by: Kazuya Ichijō (Japanese)
 is the leader of the Oni Child Trio. He is seven years old. He looks like a tough guy, but is actually a soft-hearted boy. He refers to himself as "Washi" (儂), despite his young age, and ends most of his sentences with the archaic polite copula "de gonsu" (でゴンス). He has a crush on Komachi. He uses a knife as a weapon.
Kisuke.
Voiced by: Yuji Ueda (Japanese)
 is the third member of the Oni Child Trio and has a chick-like appearance. He is five years old. He is a crybaby and uses a spoon as a weapon. He refers to himself as "Ora" (おら) and sometimes as "Kii-kun" (キーくん). He ends most of his sentences with "pii" (ピィ) and also tends to exclaim it at random. A running gag throughout the series has him often mistaken as a chick and he would shout "Kii-kun is not a chick ppii!" (キーくんヒヨコじゃないっピィ! "Kii-kun hiyoko janai ppii!").
Akane.
Voiced by: Omi Minami (Japanese)
 is the second member of the Oni Child Trio. She is six years old. Though short-tempered, Akane turns into a sweet girl when she's with Aobee, as she is very fond of him. She refers to herself as "Atai" (あたい). She is unaware that Green Oni has a crush on her. She uses a fork as a weapon.
Present day characters.
Tamura family.
Tomio Tamura / Tommy.
Voiced by: Toshiya Ueda (Japanese), Yuji Ueda (Japanese; Young), Harumi Ikoma (Japanese; Boyhood)
, mostly known by the nickname Tommy (トミー "Tomī"), is Kazuma's grandfather and Makoto's father. He is seventy years old. He lives in a log cabin. An historian, he loves to study old folk tales and fairy tales. He is very interested in Great King Enma's scepter. He also loves inventing mechanical robot dolls that can do certain things, such as the "Mechanical Music Doll" (からくり音楽人形 "Karakuri Ongaku Ningyō") that makes people behave in a certain way depending on the music playing, and the "Mechanical Dessert Doll" (からくりデザート人形 "Karakuri Dezāto Ningyō") that produces many different desserts.
Ai Tamura.
Voiced by: Satomi Koorogi (Japanese)
 is Kazuma's mother and Makoto's wife. She is thirty-two years old. She is a housewife. She is mostly seen wearing an apron.
Makoto Tamura.
Voiced by: Kazuya Ichijō (Japanese), Akemi Okamura (Japanese; Boyhood)
 is Kazuma's father and Ai's husband. He is thirty-six years old. He is a salaryman. He is soft-spoken and likes to drink beer.
Sayuri Tamura / Sally.
Voiced by: Harumi Ikoma (Japanese), Yuka Imai (Japanese; Young, first voice), Haruhi Terada (Japanese; Young, second voice)
, mostly known by the nickname Sally (サリー "Sarī"), is Tomio's wife, Makoto's mother, and Kazuma's grandmother. She is deceased and only appears in flashbacks and old photos. In the past, Mariko, her sister, lied to Tommy that she didn't like him, so that Sayuri could marry him.
Jun Koshifubuki.
Voiced by: Mitsuki Saiga (Japanese)
 is Tommy's sister-in-law and Makoto's aunt.
Alisa.
Voiced by: Haruhi Terada (Japanese)
 is Makoto's cousin and Sayuri's niece.
Kazuma's classmates.
Kintarō Sakata / Kelly / Kim.
Voiced by: Harumi Ikoma (Japanese; Series 1-2, 4-present), Rika Komatsu (Japanese; Series 3)
, mostly known referred to as Kin-chan (金ちゃん), is a boy in Kazuma's class at school and is his best friend. He is a kind-hearted boy and loves eating lollipops. He tends to end most of his sentences with "desū" (ですー), a cute variant of "desu" (です). His family is very wealthy and lives in a mansion on top of the Sakata Apartment (坂田マンション "Sakata Manshon"), which is owned by his father. He owns a stuffed doll named Tsukkii, who also becomes real in a bigger form at the Moonlight Pond. He wears a Haragake that has the word "Gold" (金 "Kin") on it.
Komachi Onono.
Voiced by: Chinami Nishimura (Japanese)
 is a girl in Kazuma's class who is very fashionable. She is often seen carrying a hand mirror to check her looks. She has a fear of insects, including Denbo. However, in later episodes she doesn't get scared of him and sometimes talks to him when he's around. Her family owns a beauty salon, which is also their home, called the "Komachi Hair Salon" (小町ヘアサロン "Komachi Hea Saron"). Occasionally, she ends up making the activities she does an instant boom in Moonlight Town, such as playing a game of Shiritori. Her name comes from the Japanese Heian period waka poet named Ono no Komachi.
Kentarō Iwashimizu.
Voiced by: Akemi Okamura
, mostly referred to as Iwashimizu-kun (石清水くん), is another one of Kazuma's classmates. Although intelligent, he is very strict and tends to criticize people. He owns a goldfish, Kin-chan No. 28, which he got from Kin-chan.
Marie's Mansion.
Mariko Jūmonji / Marie.
Voiced by: Ai Satou (Japanese)
, mostly known by the nickname Marie (マリー "Marī"), is Tommy's seventy-three-year-old friend. A fashionable dresser from an old noble family, she frequently enjoys tea with Tommy. She always wears her trademarked pointed glasses and purple hat with feathers on it. She lives in a mansion and owns a boarding house, which Sachiyo Usui, Ken, Otome, and the Haunted House Director live in. She opposes Denbo dating her parrot, Akemi. She has been friends with Yoshiko Tanaka since childhood.
Sachiyo Usui.
Voiced by: Azusa Nakao (Japanese)
 is a manga artist. She is twenty-eight years old. She usually spends her time drawing Shōjo manga to submit to a magazine. Her drawings are very distinct, but are rather scary-looking to the other characters in the series. She sometimes drinks tea and has a handful of teabags hanging near the ceiling in her room.
Otome-sensei.
Voiced by: Yuri Amano (Japanese; Series 1-2), Yuka Imai (Japanese; Series 3-19), Atsumi Tanezaki (Japanese; Series 20-present)
 is a ballerina who teaches ballet at Marie's mansion. She is twenty-two years old. She has a beautiful appearance and is well-liked by some people, such as Ojarumaru.
Ken.
Voiced by: Yūsuke Numata (Japanese)
 is a freeter who often changes jobs. He is twenty-five years old. He is spirited, but tends to get clumsy, which causes him to get fired from his part-time jobs. His part-time jobs range from working at a fish market to paving bricks.
Mr. Director.
Voiced by: Kenjiro Tsuda (Japanese)
 is a humanoid obake who is a haunted house director only during the summer. He has pale skin and his appearance looks similar to Count Dracula. He talks to invisible ghosts.
The Moonlight Town Tiny Things Club.
 is a club founded by Ojarumaru. All of the members consist of tiny species, except for Ojarumaru who is the only one that is larger than anyone else in the club. There is a fan club for it which Nikorinbou founded, while Okorinbou serves as the president. The club members gather for meetings to either discuss a certain topic, do an activity such as Golf, or help out with one of the characters (who are not part of the club) with a certain task.
Kimiko of the Big Dipper.
Voiced by: Kaori Nazuka 
, mostly referred to as Kimi-chan (公ちゃん) is a hamster who works for Cold Tessai since the episode "Kimi-chan Finds Happiness", and tells fortunes by spinning a wheel. She is the third member of the club (originally the second). She has brown stars on her back and cannot tell fortunes if they're gone. Unlike most of the animal and insect characters in the series, she communicates by making squeaking noises, however, the other characters don't have trouble understanding her.
Katatsumuri Pitt.
Voiced by: Ryō Naitō (Japanese)
, mostly referred to as Katapi (カタピー) is a snail who is from France. He is the fourth member of the club (originally the third). He talks slowly. He is good friends with Kobayashi Tea and often hangs out with him.
Kame Kameda.
Voiced by: Satomi Koorogi (Japanese)
 is a turtle. She is one thousand one hundred eleven years old. She is the fifth member of the club (originally the fourth). She is Tome's younger sister.
Tome Kamada.
Voiced by: Sataomi Koorogi (Japanese)
 is also a turtle. She is one thousand twelve years old. She is the sixth member of the club (originally the fifth) She is Kame's older sister.
The God of Poverty.
Voiced by: Ayaka Saitō (Japanese)
, mostly referred to as Poverty-chan (貧ちゃん "Bin-chan") is a tiny god that causes poverty and depression. It is seventeen years old. It is the seventh member of the club (originally the sixth) and first joined in the episode "Poverty-chan Participates in the Club". Although it looks innocent and is soft-spoken, it likes to depress people by either touching or hanging on to them. Its presence at the Mangan Shrine has caused it to be damaged, much to Okorinbou and Nikorinbou's concern. It has a board shaped like a chocolate bar called the "Motivation Board" (板やる気 "Ita Yaruki") that causes the user to feel motivated. It cannot be seen by humans.
Sabire Kitajima.
Voiced by: Ayaka Saitō
The Moonlight Town Tiny, Tiny Things Club.
Kera Ueno Nokai.
Voiced by: Tomokazu Seki
 is a mole cricket. He is the first member of the