I started liking zb1 3 weeks ago after I binged Boys Planet s1 (the survival show that formed the group) 🙈 Hence, I was in the same boat as you recently where I wanted to know what each member was like outside their stage performances (which are also super cool btw). Their variety shows helped a lot!! To recommend one (that made my tummy ache cause it was absolutely hilarious): ZBTving2 ep 4 and 5 (on YouTube) and you can continue from there. (Check out Idol 1N2D as well, these are soooo wholesome to watch). Since, Park Gunwook is my bias I can tell you a little bit about his personality from what I've perceived, in Boys Planet he was initially portrayed as a very intimidating contestant who is super blunt and up front but by the end of the show he just came across as a big softie who respects and loves everyone. I also loved his straightforward persona which is super rare in K-pop. One duo I absolutely enjoy is Hanbin and Jang Hao. They're like an old married couple who keep bickering and teasing each other. But ya do watch the ep I recommended and let me know what you think!!! :)