Okay, so Phil Klemmer didn't say that Nate is going to start cooking meth like Walter White or anything, but if one or two Legends will be "kind of breaking bad" in Season 4, that still doesn't bode well for everyone else. A smaller turn like that perhaps implies that someone within the group will pull some double-agent moves, working with the enemy while also remaining a dependable force on the Waverider (and throughout the annals of time). Could it be late-stage recruit Wally West? Will Jax's return to heroism sans Stein make him angry about the losses he's faced? Could resident leader Sara Lance herself be influenced to return to her own villainous days? (As interesting as that could be, I hope it's not the case.)