I just finished what Jason X (what can I say it's a guilty pleasure) when my Muse posed a question... what is Jason was not completely human.? What is Jason was half human and half demon.? What type of demon?? I didn't know but I"m sure that alcohol was involved in his conception.
The demon half gives him the ability to regenerate until he is kill\harm with the right item that can kill that demon species.? His demon half also gives him an extended life expectancy.
You can decide if it's human half, demon half or because how his mother raised him turned him into a killing machine.
Now that leave the question is if the Slayers can kill him without going bat shit crazy due to killing a human... or half human.
