Instead, this is a list of the blink-and-miss-them crowd, as well as the occasional recurring characters who are not Jack Harkness (though we do love us some John Barrowman).
We’ve also not included the classic Doctor Who series because we have to sleep at some point.
Doctor Who’s ever-expanding cast of creatures, creeps, and companions means that any binge watch is chock full of “Wait … is that…?” moments.
Of course, there are a few rules: We are not including regular companions or recurring characters who took on a life of their own and landed their very own TV series à la Captain Jack Harkness.