Nikto developed DID (Dissociative Identity Disorder) as a result of the torture he suffered when Zakaev kidnapped him. This also led to PTSD (Post-Traumatic Stress Disorder). Furthermore, years before this episode, he already suffered from sleep-wake disorders, such as insomnia and irregular sleep-wake cycles. Due to the latter, Nikto's sleep schedule is a disaster, which, after all the traumatic episodes that have occurred throughout his life, considerably aggravates his emotional and physical state. The lack of rest and his mental condition negatively affect his daily life and work, but Nikto remains alert or calm through the use of stimulants: cannabis as an inhibitor for nervous or stressful episodes, and cocaine to energize himself before training, and sometimes also on missions. During working hours, he smokes between one and two packs of cigarettes. Regarding his DID, up to four distinct identities have been identified on occasion. André, and three others about whom there are few details. The changes occur under high-stress situations or extremely sensitive moments, sometimes during missions. He stopped going to therapy after two years, stating that it was a waste of time and didn't help him. He stopped taking medication as a result, although he is still on antidepressants and antipsychotics. The self-harm and sexual behaviors began after the torture itself: cuts along his arms, face, neck, and legs, excessive drug use, risky behaviors, etc. They haven't stopped. The most common are self-inflicted facial injuries, especially in his home environment, which is quite deteriorated due to a lack of interest in maintaining a clean and safe place; it's not a priority for him.