i'm not sure about the marionet show, as for maximum, not really because they make there ruitines, and coreo's for when they are active in the kpop scene...
yeah, extreme reps pusan so their studio is in pusan, but there are a bunch of great bboying shows which you can pay i think it was like 20~4- dollars per show and see, such as the ballerina who loved a bboy show done by extreme in seoul
rivers opens their school at their studio and extreme have their studio in pusan, like way south (it's kinda like if you at NY, going down to like florida)
he's still with drifterz. Drifterz wasn't competing at BOTY and hong 10 wanted a BOTY title after expression and was really close with Jinjo so he competed in BOTY with jinjo, but that's it