; :Bakabon's troublemaking idiotic father who eventually steals the show and becomes the central character. His catchphrase is saying "" to someone when trying to get them to go along with one of his stupid plans. A typical episode plot involves Papa either being too stupid to perform a simple task or coming up with some crazy idea to accomplish a simple task, usually asking for his son Bakabon's advice and causing tons of trouble. He was once very smart but became an idiot after an accident. He is known for always wearing his trademark
hachimaki and
haramaki. His favorite food is
octopus. Papa has become an anime icon in
Japan and was ranked number 9 in a 2002
TV Asahi Top 100 Anime Characters list. Voiced by
Masashi Amenomori (1st-2nd series),
Kōsei Tomita (3rd series,
pachinko games), (4th series),
Arata Furuta (5th series). ; :A boy who enjoys causing
mischief, especially with his Papa. On the inside, though, he is kind and works a part-time job as a
shoeshine boy to buy his mother a birthday present. He is known for not wearing pants underneath his
kimono. At the beginning of the series he attends , which means Idiot Elementary School, but by the fourth anime it has been renamed , meaning Stupid Elementary School. Voiced by
Keiko Yamamoto (1st-2nd series, pachinko),
Megumi Hayashibara (3rd series),
Yoshiko Kamei (4th series),
Miyu Irino (5th series). ; :Bakabon's younger brother. He is a
child prodigy, understanding words almost immediately after his birth and being capable of explaining the
Pythagorean theorem and
Kepler's laws of planetary motion. His name means "beginning". Voiced by
Takako Sasuga (1st-2nd series, pachinko),
Chika Sakamoto (3rd series),
Yukiji (4th series),
Ai Nonaka (5th series). ; :Bakabon's mother and a graduate of (a parody of
Shirayuri Women's University). Despite how much trouble and mischief Papa and Bakabon cause, she is a good wife and mother. She is the only family member to have the same voice actress throughout the series. Voiced by
Eiko Masuyama (1st-4th series), (1st series, Ep. 35 only),
Noriko Hidaka (5th series). ; :The Bakabon family's odd neighbor, named so for his tendency to say "rerere" (rather than ) when confused about the countless shenanigans in the series. He is almost always seen sweeping the street outside of his yard. He is bald, has a moustache but no nose, ears that extend slightly off of his head, and wears a
yukata and
geta sandals. Voiced by
Ryūji Saikachi (1st-2nd series),
Shigeru Chiba (3rd-4th series, pachinko),
Akira Ishida (5th series). ; :The local
beat cop, referred to as in the anime. He is gluttonous, lecherous, and often fires his pistol at random. He is always wishing for money or a promotion. His notable features include his huge eyes usually drawn as connected into one eyeball, his
underbite buck teeth (from the jawbone), and his one nostril in the middle of his nose. His official name from Akatsuka is . Voiced by
Isamu Tanonaka (1st series),
Kaneta Kimotsuki (2nd series), Shigeru Chiba (3rd-4th series, pachinko),
Toshiyuki Morikawa (5th anime). ; :An unusual animal from the neighborhood who is a cross between an
eel and a dog. Voiced by
Michihiro Ikemizu (2nd series),
Aruno Tahara (3rd series),
Kōzō Shioya (4th series),
Takahiro Sakurai (5th anime). ; :A goofy dog who shows up during scene changes. ; :Bakabon's classmate who always wears a helmet. For the 4th anime he was renamed . Voiced by
Rica Matsumoto (3rd series),
Kappei Yamaguchi (4th series). ; :A reckless horse with no owner.
Minor characters ; :Bakabon's headmaster. Only appears in the first anime. Voiced by
Kōichi Kitamura. ; :Bakabon's ill-tempered classmate. Only appears in the first anime. Voiced by Kaneta Kimotsuki.
Characters from Akatsuka's other titles ; :Originally from
Osomatsu-kun, he only appears in the Rerere no Tensai Bakabon series alongside Chibita. Voiced by
Kaneta Kimotsuki (Episodes 1, 4, 16);
Kenichi Ogata (Episodes 3, 6, 11, 16, 20-21, 24) (4th series) ; :Originally from
Osomatsu-kun, he only appears in the Rerere no Tensai Bakabon series alongside Iyami. ; :Originally from
Osomatsu-kun, he only appears in the Rerere no Tensai Bakabon series. ; :Originally from
Osomatsu-kun, he only appears in the Rerere no Tensai Bakabon series. ; :Originally from
Osomatsu-kun, he only appears in the Rerere no Tensai Bakabon series. ; :Originally from
Kikanpo Gen-chan. Bakabon's girlfriend. Only appears in the first anime. Voiced by
Kazuko Sawada. ==Media==