1) There’s Only Room For One Kingpin
Episode eight of season two caused viewers’ jaws to drop when Wilson Fisk was brought back into the fold, as he manipulates Frank Castle into basically becoming his hitman.
At the start of episode nine, we see how Fisk has begun to climb his way to the top of the prison’s pecking order. Fans will no doubt have smiled when Dutton claimed he was “the Kingpin of this bitch,” naturally referencing Fisk’s moniker in the comics. Later in the same episode, Fisk finally uses the term to refer to himself, saying “in prison, there’s only room for one kingpin.”
Fisk’s lawyer Benjamin Donovan is another character derived from the comics, although he is visually very different. The original is more commonly known as Big Ben, due to his heavy build. He is usually the lawyer of Luke Cage and Claire Temple, so we should probably expect to see him turn up in Luke Cage next… A series that, of course, had a sneaky teaser trailer tagged onto the end of this season.