Fred Norris/Cinemax

With “Strike Back” and, beginning Friday night, “Banshee,” the HBO-owned Cinemax — also known for its late-night softcore programming — appears to be staking a claim for the B-movie-styled action-series niche. And “Banshee,” like “Strike Back,” isn’t half bad. The show doesn’t pretend to be anything more than what it is — a violent, sexy, somewhat cheesy, but generally entertaining genre drama — and that makes it easier to like. Created by Jonathan Tropper and David Schickler, both fiction writers, and executive produced by Alan Ball, “Banshee” probably won’t be Cinemax’s big breakthrough series, the one that gets enough buzz to draw big viewership numbers and maybe even acclaim; but it certainly may develop a satisfied following.