Daredevil’s first season came out earlier this year and it’s really good! It’s in my opinion the most dark and gritty thing in the MCU and unlike many shows, you will actually care about the characters’ well-being. The action is awesome as well, I highly recommend Daredevil if you like dark but original content! For some reason it ended up being rated Mature Audiences (17+) but I believe it should be ok for most kids 13 and older as long as they aren’t squeamish.
Available on Netflix, iTunes, and Amazon.