Foggy Nelson and Elektra will eventually kill the Kingpin
To try to save Matt from the constant cycle of violence that he and Fisk go through. Daredevil's secret identity is Clark Kent
Inspired by photographer-superheroes like Peter Parker and Jimmie Olsen, Clark wanted a piece of the action and to help fight injustice. After all, if those twigs could do it what excuse does he have to be left behind? Needless to say if he wore his glasses people would instantly recognize him so he had to give up the power of sight.- Nonsense! Everyone knows Clark Kent is secretly Hellboy.
- Nope, he's really Bruce Wayne.
Vapora from Daredevil vs Vapora #1 was a demon working for Mephisto
Since Vapora is an evil entity that feeds off pain, and Daredevil was fighting Mephisto at the time (and no other origin was given), it just makes sense that Mephisto would send such a being to cause trouble for Daredevil.