Stick is Daredevil's mentor. Like Daredevil, he's blind. His eponymous walking stick doubles as his weapon of choice. His teaching style? Let's just say he's not exactly the go-easy-on-the kid type.
Frank Miller cut his teeth on Daredevil, and invented the mysterious Stick back in 1981. The panels shown here are from Daredevil: The Man Without Fear, a sort of "year one" for Daredevil which appeared in 1993. You can still hear some notes from The Dark Knight Returns, if you listen closely.