Of the hundreds that lived there... not a single one survived...

A picture from Jadine's past. So this is 'baby Jadine' as it were.
Back in his youth, Jadine had a very tough time... people close to him were murdered, lord Drax (his superior) constantly abused him, he ran away and became a recluse, got addicted to drugs for a while...
generally spiralled downwards.

One night, he just snapped... completely and totally insane, he ventured to a villiage and slaughtered everyone, bathing in their blood.

Jadine actually does love killing... he finds is very sensual and arousing... often getting very... umm 'carried away' when covered in his victims blood.

Indeed.