What kind of past do those people in Culolo, Phantom Troupe have?

There is no information about the members of the brigade in the past 60 years, and even the hunters can't be found, so it is speculated that Phantom Troupe is from meteor street, because meteor street is a place where everything can be discarded, even babies. Give priority to stealing and killing, occasionally do some charity activities, and the treasures obtained are handled by the head of the team. Most league members are very violent, so it is absolutely forbidden for them to kill each other. When there is a dispute, they will flip a coin to solve it.