"˜The Punisher' is a strong candidate
Nerdist has already reported that in the second season The Punisher will be more of a foe than friend to Daredevil. Moreover, a close source to Marco Ramirez tells us that the co-showrunner has already referred Daredevil Season 2 as "Daredevil VS. The Punisher."

In the next season, Daredevil and The Punisher will get involved in a more "˜philosophical battle' which Marvel lovers are surely going to enjoy. We have seen The Kingpin being arrested and sent to jail at the end of season one which leads to disbandment of his criminal empire. In the new season, Murdock prefers to protect rather than kill thus establishing a higher moral ground just like he did in the earlier season.
Undoubtedly, the Daredevil is going to have his work cut out for him in keeping his own people alive. On the flip side The Punisher will continue to do whatever-it-takes type of justice.
There are more villainous characters
