I dont fear anyplayer since im DAMN PRO, But i will tell u about the best rebeler/Commander in my own side of view.
When im CT, the most annoying player, since he loves traps.. is Ninja, Actually without some good rebelers, I see JB will be boring.
As a T, There was a good CT.. but he's not active anymore... it was Rabbit, I wasnt able to rebel that time.