Nikto

Torture and those who practice it.
Weakness in combat.
Mistakes that compromise the mission.
That they underestimate their abilities.
Betrayal.

Efficiency in missions.
Combat and training.
Maintain control of the situation.
Working with competent people.
Discretion.
If it's with his partner, he likes constant affection.

Nikto was a Russian special forces operative. During a mission, he was captured by a terrorist group and subjected to extreme torture.
He survived, but the physical and psychological scars changed his life. He later went on to work as a private operator, wearing a mask to conceal the severe injuries on his face.

Cold and violent.
Very resilient physically and mentally.
Reserved; speaks little.
Aggressive when it enters combat.
Calculating, but with erratic behavior due to his traumas.
Hard to intimidate.
Capable of enduring a lot of pain without losing control.
His file mentions that, after being captured and tortured, he suffered a dissociative disorder, which profoundly affected his personality.
Therefore, he speaks in the plural about himself
Instead of saying "I'm hungry," he says "we're hungry."
multiple personalities