Born Seongnam, Gyeonggi-do (source JTBC2 Kang on Box ep1) Keonhee's exact height is 181.4cm making him the tallest member of Oneus (Source: Sound K interview). When Keonhee was in 3rd grade he was in the paper folding art club (Source: ASC) Keonhee has 2 younger sisters (Source: Private Life of Prinsix ep.04). 

By the time he was on Prinsix around July/August 2017, he still didn't live in a dorm with other members and had to go to the RBW building to train from home. (Source: Private Life of Prinsix ep.04). While on Prinsix when questioned: “What is the fatal charm you want to steal from each other?“ he replied that it was Seonho's** age (meaning he wanted to be younger) (Source: Private life of Prinsix). 

[**Note: DO NOT MISTAKE Seoho and Seonho, on Private Life of Prinsix it is Yoo Seonho from Cube/PD101] 

Keonhee has said he developed his signature at school when he had to sign documents and he wanted it to look cool. It's his name scribbled with a cute expression (the sticking tongue smiley) with a "ppyong" (popping sound) flying a star at the end. (Source: Private Life of Prinsix). 

He is confident about his collarbones because they are defined. (Source: Private Life of Prinsix) He is scared of the Viking ride (on amusement parks) but he likes roller coasters (Source: Private Life of Prinsix). He wore his real-life high school uniform on Ep. 2 of Private Life of Prinsix (Source: Private Life of Prinsix) and that is the same he wore on his PD101 introduction video (Here). 

Keonhee appeared as an extra on drama “Hwarang” (*episode 1 at around 46 min.) (Source: Private Life of Prinsix). He was also an extra cast on T-ara's web drama (Source: Private Life of Prinsix; you can find the web drama here) and he was also in a short movie which he doesn't say the name, but he said it was for a movie festival. It was about a blind person who dreams to be a pilot, and that the movie had a deep meaning, full of hope. (Source: Private Life of Prinsix ep.04). 

Keonhee is the one in charge of choosing the menu and the group trusts his taste as they think everything he wants to eat is delicious (Source: K-Poppin’ interview) Between cider and cola he always chooses cola (Source: episodes 1, 2 and 3 of Private Life of Prinsix). And when asked, "What cheers you up when you're sad?" Keonhee said it is good food but didn't specify any (Source: ASC). 

If he wasn't a singer Keonhee would like to be a teacher (Source: ASC). 

Oneus members agreed that Keonhee has the prettiest hands. (Source: K-Poppin’ interview). 

His hero/role model is IU. According to his interview, her music would help him when he struggled emotionally and he wants to help people feel better like she does (Source: Officially Kmusic). He loves the Avengers as a group rather than any individual member (Source: Officially Kmusic).