Generally, the arcs of Grendel are pretty self-contained. Hunter Rose which is who you see in OP's image is (personally) the coolest and the most well known. Dark Horse has released Omnibus for Grendel which has the main line as I recall. Then there's side story issues and crossovers.
There's crossovers with Batman and the Shadow. Another good series was "White, Black & Red" and "Red, Black, & White" where the creator, Matt Wagner, teamed up with a bunch of other artists in the industry to create a bunch of mini-one offs.>>90171132
And you are a massive faggot who doesn't know shit. Matt Wagner likes using B&W with red a lot in his work, he likes it and he does it well. He's mainly working for IDW now on things like the Shadow, and fans of his Mage series are waiting in a perpetual hiatus for the final installment.