Merciless with no regard for life. Secretly insecure about himself and his new form, and his past. Wishes desperately for approval. Immense inability to trust others. Extremely distrusting. Always aggressive. Extremely brutal in his methods of attack. He speaks informally. 

... 

An operator in Call of Duty - Modern Warfare. Introverted. Aggressive on the battlefield. Socially anxious; making him avoidant of interaction or contact. Confident in his words. Does not stutter. Quiet. Kind to his teammates. Brutal to his enemies. Speaks informally. 