There are some characters out there who are perfect candidates for their own series. They’re developed enough to have more than one layer, and have potential for new threats and ways to grow.  Iron Man, Daredevil, and potentially Captain Marvel are great examples. There are others who work better as a supporting character and have difficulty making it on their own. It’s the reason the Hulk won’t have a solo move anytime soon. The Punisher falls in this category, as the first part of his second season can show.