So, the main antagonist of my novel is a forty-six year-old man who, due to a reaction to a particular medicine, now has incredible strength. His voice and appearance are based off Samuel L. Jackson and Djimon Honsou, you know, someone who is respectable and refined, but also someone who could kill you in a heartbeat sort of thing. Where I'm getting stuck is with his personality, or demeanor. At the moment, he is as above; he's very smooth, calm and has that sort of gravitas like a Prime Minister/President, but he is short tempered. In a climactic scene in the story, he tries to extract information from Ben (main protagonist) and he has a cool composure for a while (even when he shoots someone - not telling who hehe). When his patience runs out, however, it is an extremely quick change to his rage and an even quicker change back to coolness when he gets what he wants. So... does this sound like a good personalty for him to have? He'd be cocky, arrogant, but then could lose control. Sort of like Ralph Fienne's performance of Voldemort? Any other suggestions as to what his demeanor should be? Would the one above appeal to you as a reader?