Oooh I don’t really know.
The leader(s) would possibly be Namjoon or Yoongi. If they were a gang, I’d like to think that they’re the type who seem intimidating because of their image and the vibe they give off but truthfully each and every one of them would be very nice - they would probably still have the personality qualities that they have now but as a gang you should know not to mess with them. I think they would be friends with GOT7 if they were a gang but it’s not to say that they would be good friends but they would just be friends (if you understand what I’m trying to say.)
As for positions.
Jin: He would probably be the calmest out of his gang members, and he would basically be the one who would calm down his members and try to get them out of trouble. Like, for example, idk say there robbing a bank or something, he would be the one waiting at the car ready to drive off before the police comes.
Suga: He could be the leader that has everything under control, so he would probably plan the gang’s activities and when they would do stuff. He wouldn’t really be the brain of the group, just the person who is responsible for them all.
J-Hope: He would be the person who is sort of doubtful about causing trouble but would stick by his gang members sides at all costs.
Rapmon: Another possible leader, he would be the brains of the gang. Alongside Suga he would plan the gangs activities but he would be the one to confirm whether or not they should do whatever needs to be done. I can just imagine him decoding passwords and hacking into different systems.
Jimin: The one who doesn’t know how he got into this mess
V: The one who’s just here to have fun
Jungkook: The one who wants to impress his gang members by acting all tough