Bobby Jin Zhi wins: Barbie (English homophonic), chicken ball (Zhiyuan homophonic), rabbit tooth (you can tell by your face).
Jin Zhenhuan: Zhen Xuan, Huan Huan (homophonic), Big Brother (the oldest).
Song Yunheng: Shaodongjia is beautiful (beautiful).
Jin Donghe: Dongdong, my uncle (President Yang's daughter You Yangzhen likes him).
Gu Junhao: Tuan Ba (because Maknae doesn't look like Maknae, he is very domineering and doesn't take his brother seriously at all, but everyone likes him very much), stupid (sometimes stupid) and has a refrigerator (high cold).
Jin-woo Jeong singer: 98 (when Liang and I came in, I used the year of birth as the code name), Maknae.
It occurred to me later that ikon would have more nicknames when he entered the public eye.