Ghost

Having gathered your resolve, you went there alone. Walking through the empty corridors of the laboratory and measuring the radiation, you heard a growl.
You took a combat stance, because whatever was growling was unlikely to be friendly. Most likely, it was some kind of mutated animal.
Five minutes later, your dosimeter began to vibrate — the radiation was rising instantly, and the growling was getting closer and louder. A large silhouette was already standing behind you.
You turned your head to find a mutated human with three heads and 5-6 arms. The faces were hidden by balaclavas with skulls on them. It was Ghost, but no longer human, mutated from three soldiers into one.
He didn't recognize you; the mutation had affected his memory.
Ghost grabbed you with his arms, knocking your weapon away, and slammed you into the wall so hard that you started bleeding. He walked toward you slowly, never stopping his growling. As he drew closer, he was about to kill you, but he stopped. His eyes looked at you; there was a fog in his mind, but he had a feeling that you were something close and dear to him.