UNDEЯ DOG Profile and Facts
UNDEЯ DOG is a six-member Japanese boy group under RINDO Entertainment. The group consists of Hamo, Ito., Komugi, Kota, Sena, Kei, and Ayumu. They debuted on August 4, 2024, with the single “アンダードッグ (Underdog)”.
Group Name Meaning:
The official group name UNDEЯ DOG plays directly on the classic English concept of the underdog, which means the competitor least expected to win. The backward “Я” is a stylistic choice used by RINDO Entertainment to symbolize rebellion, distortion, and non-conformity. It signals that the group does not conform to traditional, overly polished male idol standards, opting instead for a gritty underground punk persona.
Official Greeting: N/A
UNDEЯ DOG Official Fandom Name: N/A
UNDEЯ DOG Official Color: N/A
UNDEЯ DOG Official Logo:
Official SNS:
Website: underdog-official
Instagram: @underdog_info
X: @underdog_info
TikTok: @under_dog_official
YouTube: UNDEЯ DOG
Spotify: UNDER DOG / UNDEЯ DOG
Apple Music: UNDER DOG
TuneCore Japan: UNDERDOG / UNDEЯ DOG
UNDEЯ DOG Member Profiles:
Hamo
Stage name: Hamo (はも)
Birth Name: Hashimoto Daiki (橋本大貴)
Birthday: September 11, 1999
Zodiac Sign: Virgo
Chinese Zodiac sign: Rabbit
Height: 174 cm (5’8″)
Weight: N/A
Blood Type: O
MBTI Type: ESFP
Representative Color: Blue
Instagram: @hamocchainay0
X: @und_hamo (Main) / @niwatorisanday0 (Sub)
TikTok: @und_hamo
Hamo Facts:
– Hamo was born in Saitama, Japan.
– He is a founding member.
– Hamo is a former member of Cartes le Roi and Roseozero.
– He likes making people laugh.
– He dislikes getting ghosted.
– His shoe size is 27.5 cm.
– He’s right handed.
– His favorite colors are pink and green.
– His favorite food are cheesecakes.
– He doesn’t have a favorite brand.
– His favorite seasons are autumn and spring.
– His favorite animals are chickens.
– If he was an animal, he would be a chicken.
– His weak point is being too kind.
– Others would describe him as a weird person.
Ito.
Stage Name: Ito. (伊藤。)
Birth Name: Ito Takumi (伊藤拓海)
Birthday: July 31, 2000
Zodiac Sign: Leo
Chinese Zodiac Sign: Dragon
Height: 168 cm (5’6″)
Weight: N/A
Blood Type: A
MBTI Type: INFP
Representative Color: Pink
Instagram: @und_ito31
X: @und_ito (Main) / @1to_pan (Sub)
TikTok: @110sandet
Ito. Facts:
– He was born in Chiba, Japan.
– He is a founding member.
– He is a former member of Rozeosero.
– He likes cooking.
– He dislikes waking up early.
– His shoe size is 26 cm.
– He’s right handed.
– His favorite colors are black and white.
– His favorite food is meat.
– His favorite season is autumn.
– His favorite brand is BILLIONAIRE BOYS CLUB.
– His favorite animals are large dogs.
– If he was an animal, he would be a dog.
– His strong point is being serious.
– His weak point is being a latecomer.
– He would describe himself as short tempered.
Komugi
Stage Name: Komugi (こむぎ)
Birth Name: N/A
Birthday: November 7, 2000
Zodiac Sign: Scorpio
Chinese zodiac sign: Dragon
Height: 168 cm (5’6″)
Weight: N/A
Blood Type: O
MBTI Type: ISTP
Representative Color: White
Instagram: @und_komugi
X: @und_komugi (Main) / @komugi_nikki (Sub)
TikTok: @und_komugi
Komugi Facts:
– He was born in Aichi, Japan.
– He is a founding member.
– He is a former member of OXYGENLOVER, loopkaiwai, kimi ga koibito dattara, and MUSHUUUP!.
– He likes taking photos.
– He dislikes getting ignored.
– His shoe size is 24.5 cm.
– He’s right-handed.
– His favorite colors are white, black, and light blue.
– His favorite foods are meat and sushi.
– His favorite season is winter.
– His favorite brand is Prada.
– His favorite animals are dogs.
– If he was an animal, he would be a dog, koala, or a bear.
– His strong point is sleeping well.
– His weak point is getting angry easily.
– He would describe himself as having a sharp tongue.
Sena
Stage Name: Sena (せな)
Birth Name: Akiyama Sena (秋山聖那)
Birthday: December 19, 2001
Zodiac Sign: Sagittarius
Chinese zodiac Sign: Snake
Height: 174 cm (5’8″)
Weight: N/A
Blood Type: O
MBTI Type: ISTP
Representative Color: Purple
Instagram: @_s.77e__
X: @und_sena (Main) / @_77se1_ (Sub)
TikTok: @_s.77e__
Sena Facts:
– He was born in Shizuoka, Japan.
– He is a founding member.
– He is a former member of Rozeosero.
– He likes being lazy.
– He dislikes roller coasters, bungee jumping.
– His shoe size is about 26.5 cm to 27 cm.
– His strong and weak point is doing things his own way.
– Others would describe him as quiet.
– He’s right-handed.
– His favorite colors are black and white.
– His favorite food is ice cream.
– His favorite season is winter.
– His favorite brand is Chrome Hearts.
– His favorite animals are dogs.
– If he was an animal, he would be a cat.
Kota
Stage name: Kota (こうた)
Birth Name: N/A
Birthday: December 26, 2001
Zodiac Sign: Capricorn
Chinese Zodiac Sign: Snake
Height: N/A
Blood Type: A
MBTI Type: ESFP
Representative Color: Red
Instagram: @3ko_ta8
X: @und_kota
TikTok: @3ko__ta8
Kota Facts:
– He was born in Hokkaido, Japan.
– He is a founding member.
– He is a former member of Repalette under the stage name Kouta.
– He likes sleeping, eating potato chips, and watching Netflix.
– He dislikes planning the day and hanging laundry.
– His shoe size is 26 cm.
– He’s right handed.
– His favorite colors are black, red, white.
– His favorite food is cheese in omurice.
– His favorite brand is whatever Yamada Ryosuke is wearing.
– His favorite season is summer, like the one he experienced when he still lived in Hokkaido, Japan.
– His favorite animals are lions.
– If he was an animal, he would be a dragon.
– His strong point is being strong when motivated.
– His weak point is having difficulty getting motivated.
– He would describe himself as a person that does things his own way.
– Others would describe him as nice, intelligent, and very cool.
Kei
Stage Name: Kei (けい)
Birth Name: N/A
Birthday: April 30, 2003
Zodiac Sign: Taurus
Chinese Zodiac Sign: Goat
Height: 176 cm (5’9″)
Weight: N/A
Blood Type: AB
MBTI Type: ENTP
Representative Color: Green
Instagram: @und_kei
X: @und_kei (Main) / @kei_tuuu (Sub)
TikTok: @und_kei
Kei Facts:
– He was born in Tokyo, Japan.
– He is a founding member.
– He likes playing games at home.
– He dislikes making eye contact.
– His shoe size is 25 cm.
– He is right-handed.
– His favorite color is green.
– His favorite food is sushi.
– His favorite brand is Chrome Hearts.
– His favorite season is spring.
– If he were to be an animal, he would be a dog. Dogs are his favorite animals.
– He has a dog called Didi.
– His strong and weak point is doing things his own way.
Ayumu
Stage name: Ayumu (あゆむ)
Birth Name: N/A
Position(s): N/A
Birthday: December 22
Zodiac sign: Capricorn
Weight: N/A
Height: N/A
Blood Type: B
MBTI Type: N/A
Nationality: Japanese
Representative Color: Orange
Instagram: @und_ayumu
X: @und_ayumu
TikTok: @moyashi_shakaiteki
Ayumu Facts:
– He joined UNDER DOG on October 25, 2025.
– He likes watching Netflix with his parents’ cat.
– He dislikes riding crowded trains.
Haruto
Stage name: Haruto (はると)
Birth Name: N/A
Birthday: June 11
Zodiac Sign: Gemini
Height: 170 cm
Height: N/A
Blood Type: A
MBTI Type: N/A
Nationality: Japanese
Representative Color: Yellow
Instagram: @haruto79467
X: @und_haruto
TikTok: @haruto_611
Haruto Facts:
– He was born in Kanagawa, Japan.
– He joined UNDER DOG on October 25, 2o25.
– He’s a former member of Petrichor and Melogravity.
– He likes driving, beauty, and dancing.
– He dislikes going to sleep on an empty stomach.
Minato
Stage Name: Minato
Birth Name: N/A
Position(s): N/A
Birthday: February 6
Zodiac Sign: Aquarius
Weight: N/A
Height: N/A
Blood Type: AB
MBTI type: ESFP
Nationality: Japanese
Representative Color: Light Blue
Instagram: @nf4xx
X: @und_minato
TikTok: @nf4xx
YouTube: みなと
Minato Facts:
– He was born in Ibaraki, Japan.
– He’s a concurrent member of Ⱥstral.
– He joined UNDER DOG on October 27, 2025.
– He’s a former member of .DOLL and i DOLL.
– He likes shopping and sleeping.
– He dislikes waking up early.
Former Member:
Hiiro
Stage Name: Hiiro (ひいろ)
Birth Name: Saito Hiroki (齋藤光希)
Position(s): N/A
Birthday: August 22, 2002
Zodiac Sign: Leo
Chinese Zodiac Sign: Horse
Height: 178 cm (5’10”)
Weight: N/A
Blood Type: A
MBTI Type: N/A
Nationality: Japanese
Representative Color: Red
Representative Emoji: N/A
Instagram: saihiro_kun
X: saihiro_sub
Hiiro Facts:
– He was a founding member.
– He graduated from the group on May 26, 2025.
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Made by: mimi
Edited by: museoftop
Latest Official Release:
Who is your UNDEЯ DOG oshi? Do you know more facts about them? Feel free to comment below. 🙂
