From here on, there will be XO2 promotions!

Subunit colour: Ube
Debut: January 16, 2020 with their mini album "Oxygen".
Members:

Jin Heiryoung (Yejin) - -penguwin
-Korean
-lead vocalist, rapper, face of the group, composer
-164 cm/48 kg

Park Yina (Nia) - blacktwicevelvet22
-Korean
-Main Rapper, Lead Dancer, Leader, Composer
-160 cm/51 kg

Maylin Moto (Gyand) - -penguwin
-Japanese
-main vocalist, lead dancer, producer
-152 cm/41 kg 

Kanya Aksornpan (Kanya) - To_The_Moon247
-Thai
-Main dancer, Vocalist
-178 cm/52 kg

Jiang Xiao Lu (Xiao) - imashineegirL
-Korean Chinese
-Main Dancer, Lead Vocalist, Center
-167 cm/49 kg

Carol Lai (Carol) - laic2299
-Taiwanese Canadian
-Lead Vocalist, dancer, visual
-167 cm/49 kg

Kanokwan Sodsaengthien (Lola) - SizzlinBling
-Thai
-Lead Dancer, lead rapper, vocalist, maknae
- 167 cm/49 kg

I don't know 😂 Or I copied in a wrong way, because 3 of them have the same height and weight.