FIRST AID has dedicates his life to pain. Before the war, he was a doctor who was nearly arrested for his illegal and unethical medical practices. However, once Emperor Prime his brutal reign of terror, First Aid found a new use for his unique talents and interests: interrogator for the Autobot Secret Police. First Aid can brutalize a suspect to the point of death, and then bring them back for more "questioning." First Aid cares little about what actual confessions or information can be gleaned - he just likes to push the boundaries on how much terror and torment he can inflict upon a fellow being before they are driven over the edge and beyond.