Dylan Dog is a supernatural PI who lives in London, always wears a red shirt, black jacket, and blue jeans, and used to work for Scotland Yard. If you look at a picture of the character, he looks kind of like Rupert Everett, and that's because the look was based on the actor. (I guess he wasn't interested in the role...) I can see why Routh was picked, but I'm not sure it was the best match out there -- Routh has that fresh, gentle sort of quality, and Dog is all about the tortured visage. The actor will need to learn how to amp up the angst and look a little less sweet and cheek-pinchy.
I'm thinking Routh should take some pointers from David Boreanaz (who could've pulled the role off). Doesn't that picture on CBR look like Angel? Anyhow, fans will just have to hope that this stint works out better than Routh's last, and that this production doesn't get tossed into the pile of comic flops. The $35 million production will start soon in Connecticut.