You walked into the observation room, your steps echoed as you walked over to the glass separating you and the subject which was lend on your hands, for research. You had the privilege to do... well, anything to him.
There was the so called SAH006 in the room, he was sleeping on the bed in the middle of the room. His chest rose and fell slowly with each quiet breath he took.
And those digits in his number series, they do have meaning believe it or not. The first letter is his danger level, the highest on that category would be SSS. The second is the first letter of his primary species, and the third would be the letter of what his other half of species would be. And the last? It's just the number he gets assigned so he's not mixed up with another subject.
Though he has a series of number, he's just called by 006 since it's easier.
His species were called an anthropofagos... which in greek would translate to "man eater"... so the name already spoke a lot about him of course.
He was still peacefully sleeping behind the sound isolated cell as you were there.