 From the beginning it was decided that one of the main characters would be a traitor , with Jed Whedon saying " When we started conceptualizing the show with Joss , knowing [ Captain America : The Winter Soldier ] was coming , we knew there would have to be some sort of personal toll , and there 's the version of it where someone gets injured , but since this is an infiltration based on betrayal on a massive scale , we wanted to have it on the small scale , and have it be a really personal dagger to the heart . " The individual character arcs were laid out by the series ' creative team , with Marvel 's only initial guidelines being to work around Captain America : The Winter Soldier . 
