This weekend, Bangor Roller Derby will host its first “bout” at the old Hampden Academy gym.It’s a growing sport around here. Nick Coit joins us with a look at unique part of it.These athletes train very hard. It’s one of those sports that involves a lot. You have to be a good skater. You have to be able to push people around. Also, you have to be aggressive.One way to bring that intensity out…derby names! Each athlete has a special name…so when they walk into practice or a “bout,” they turn into someone different!We asked a couple of the athletes how they got their names!