Nighthawk was a long-time member of the Defenders. He was a rich industrialist in his secret identity, so when he was in a legal jam, he hired respected lawyer Matt Murdock (aka Daredevil) as his counsel and naturally led to a Daredevil/Defenders team-up.
There’s actually a template on the DC wiki to cross-reference categories.
The characters listed on this page are both villains and blind.
Good to have you back, Skald.