Golgo 13

Golgo 13, also known as Duke Togo (Japanese: デューク・東郷 Hepburn: De~yūku Tōgō), is the titular character of the manga series of the same name created by Takao Saito. An assassin for hire, Golgo accepts jobs from various organizations & individuals. He is known for - among other things - his cold, calculating attitude, superb marksmanship skills & prowess with women.

Golgo appeared on a crossover television special between the Golgo 13 and Jewelpet series, Golgo 13 x Jewelpet and its film adaptation. He's often referred by Jewelpets as "Mr. Thick Brows" and "The Man Who Never Smiles", although he did anime expressions.

Trivia

 * Golgo 13 is the first professional assassin to do anime expressions during Golgo 13 x Jewelpet and its film adaptation's events.