Hot and cold is a good descriptor. Irritable or short tempered is probably more accurate, but Klaus is oddly enough in no danger at the moment. As long as he doesn't insult him or anything, he could be useful, especially if he does okay with a knife. All Captains need a crew, and Edward just lost his.

"Let her call the fucking Navy." he groans as he inhales again. He doesn't give a fuck.

"Left side." he mutters into his drink. "I've probably taken a dozen blades there. And I don't have the death count you claim to."