His nicknames are "Hyuka" and "Ningning."
Hueningkai can speak Mandarin, English, Portuguese, and Korean.
Huening Kai likes penguins and otters.
His Father is Brazilian & German, and his mother is Korean.
He can play the piano, drum, and guitar.
Huening Kai is the first foreigner to debut under BigHit Entertainment. Aside from this, he is also currently the youngest idol in the company.
Huening Kai’s younger sister Bahiyyih is a member of the K-pop girl group Kep1er.
He has 2 sisters (little & big sisters). His big sister Lea is an former member of girl group VIVA. She debuted as a soloist on November 11, 2022.
His father (Nabil David Huening) is a singer, songwriter, musician and performer.
Hueningkai started Soobin's bread and sweets addiction said Soobin in TXT's one dream tv show in America saying one day when Soobin had gotten home from school Huening Kai came back to the dorm with a bunch of bread and sweets.