5. Mike Erhmantraut Must Die
In many ways, Mike Ehrmantraut is one of the most likable characters in all of Breaking Bad; he is clear and up-front about what he does, is extremely efficient and thorough, and manages to mostly protect his family from any consequences. However, a man of his age in such a dangerous profession is sure to eventually fall foul of circumstance, and his big mistake in episode two of the current season - allowing Lydia, who he held at gunpoint, to live - is likely to prove a fatal mistake. Furthermore, there is always the possibility that Walt, seeing Mike as the mediatory force who keeps Jesse safe, might take care of him so that he can then take down Jesse consequence-free if things get too sticky.