Dr. Owen Hunt
Owen Hunt is an army surgeon, specialized in trauma surgery. The character makes a dramatic first appearance when he performs a tracheotomy on a man with a pen, winning the admiration of Dr. Yang. Having suffered a wound himself, his extreme nature is further emphasized when he staples his own injury without any anesthesia. He later shares a passionate kiss with Yang.[1]
The character of Hunt becomes a source of turbulence and controversy. He becomes the new head of Trauma in Seattle Grace, and manages to irk both Dr. Shepherd and Dr. Sloan who view his treatment of some of the patients as crude. He is also rebuffed by Dr. Stevens when he stabs a set of pigs and then orders the residents and interns to save their lives, in order to teach them medicine on "live tissue." [2] [3]
Hunt reveals details of his painful past to Dr. Yang, telling her about the death of his entire unit during his last tour in Iraq. These events seem to impact a lot of Hunt's behaviour, such as his disgust for residents arguing over surgeries and talking about patients with little human decency and respect. He later kisses Yang again, somewhat desperately, after telling her that he doesn't need her. [4]
They eventually begin a relationship, which is complicated by his Post-Traumatic Stress Disorder and briefly by the presence of his ex-fiance. [5] Hunt injures Cristina twice in his sleep as a result of his PTSD, first at the hospital[6] and later at her apartment. On the latter occasion, she wakes up when he is strangling her. She initially tries to reassure him and continue the relationship, but she is ultimately forced to break up with Hunt when she is unable to fall asleep in his arms.
Source: Wikipedia.org