I have been playing for almost a year now and I appear to be held back by some kind of glitch some standard characters that I am supposed to get from fighting the bosses never drop; Marina, Edna, Salem, and Noomye have eluded me despite thousands of tries over the past several months. Even if the drop rate was .01% I should have gotten them by now. Could I be doing something wrong or is this a glitch in the game?