1. Mike
Mike Ehrmantraut is one character who would hands-down be wanted to be seen by all who watch Better Call Saul. He's also the most realistic possibility on this list considering that he already had a history with Saul as an enforcer and cleaner before his first appearance in season 2. His untimely death in season 5 still cuts deep, and like most characters in Breaking Bad, he has enough going for him to lead his own spin-off series. Mike is another man who can always be relied on to get the job done no matter what - the ultimate professional. So despite the fact that him and Saul may not always see eye to eye, he's certainly another employee of Saul's who he would love to use in his business prior to Breaking Bad. Jonathan Banks often stood out as one of the best actors in Breaking Bad. He may have been easy to overlook when compared to Bryan Cranston, Anna Gunn, Aaron Paul, etc., but Banks had a way of owning the frame and always making the programme better when he was on the screen. Not only that, but Mike was a hugely layered character with an intricate and fascinating background that would be joyous to explore further, even if it's only for a handful of episodes. Do you disagree? If there's any characters that you would prefer to see make an appearance in Better Call Saul than the ones that I have listed here, comment below!