Group Members

Castle J (MCND) Profile, Bio, & Facts

Castle J (MCND)

Castle J (캐슬제이) is a South Korean singer-songwriter and a member of the Kpop boy group MCND under TOP Media.

Castle J (MCND) Profile

Stage NameCastle J (캐슬제이)
Birth NameSon Seong Jun (손성준)
BirthdayMay 31, 1999
Active Years2011–present
Age25 (in 2024)
Zodiac SignGemini
Height176 cm (5’9.2″)
Weight60 kg (132 lbs)
Blood TypeO

Castle J (MCND) Facts:

Early Life

– Castle J was born in Seoul, South Korea.
– He went to Baemun Middle School and graduated from Anyang Arts High School.

Personal Life

– His Chinese zodiac sign is the Rabbit.
– He is enrolled in Daegyeong University at the Department of K-Theater and Film.
– During his trainee period, he once ran away from the company because training felt hard but came back in less than a day after the company called him through the younger members phone since he wasn’t picking up the staff’s phone. (POPKORN)
– His hobbies include watching movies alone, eating alone, listening to music, and shopping.
– He has been friends with Weki Meki’s Yoojung for a decade.
– His eyesight is -2.5 in the left eye and -1.5 in the right eye.
– He gets angry the most when things don’t go as he planned. (MBCkpop)
– He thinks he has the best fashion style in the group because he likes clothes and has his own style.
– His childhood dream was to be a super pop-star. (Fanvatar)
– He is close friends with SEVENTEEN’s Vernon.
– His playlist includes ‘Humble’ by Kendrick Lamar, “– 34+35” by Ariana Grande and “Come & Go” by Marshmello.
– He would like to be a main lead in a high school youth drama if given the choice. (Pinkvilla Hallyutalk)
– He has his own room.
– He owns three dogs named Rookie, Merang, and Cookie and also has a pet cat.
– Huijun said his style is very clear and he knows what look he wants to wear. (Celeb Confirmed)
BIC describes Castle J as the “Pillar” of the group.
– His nicknames include ‘Street Boy’ and ‘Dinosaur’.
– He is intelligent and would be good at making strategies, according to BIC.
– He traveled to the US four times to receive dancing lessons. (Soompi)


– Castle J is the Leader, Main Rapper, and Producer in MCND.
– He composed the song “Ninja” for Bang Junhyuk’s performance on Under19.
– He created remixes for several tracks they danced to before their debut, such as “Dalla Dalla”, “Kill This Love”, and “Bad Guy”.
– He wrote the lyrics for their debut song “ICE AGE”.
– As a child actor, he made a cameo appearance in “The Queen’s Classroom”.
– He, Minjae, and Huijun joined TOP Media in 2015.
– He and Win participated on the show “Show Me The Money 10”, but were eliminated in the second round.
– In 2016, he, BIC, Minjae, and Huijun received dance training in America.

Likes & Dislikes

– His favorite nickname is ‘Dinosaur’.
– He doesn’t like both summer and winter and loves spring, and fall.
– His favorite K dramas include “Hospital Playlist”, “Squid Game” and “When the Camellia Blooms.”
– He also likes the K drama “Queen of Tears.” (zoom)
– His favorite ice flavours include Shooting Star and Pistachio Almond.
– He hates snakes and bees.
– He likes the rapper ‘Juice WRLD” and likes listening to his songs. (Kcrush)

Streaming Platform Links
Genie | Bugs | Melon | SoundCloud

Castle J Photos

Note: How did you get to know Castle J? Mention your story in the comments section and also share more facts with us if you know!

‘ODD-VENTURE’ – Fancam:


Lilian Chen

Yo! I'm Lilian, an Ahgase and a curious wordsmith on a never-ending quest for knowledge. Don't hesitate to spot any slip-ups in my work and feel free to reach out with additional facts & insights! ^^

Leave a Reply

Your email address will not be published. Required fields are marked *