Are servitors seperate from us or apart of us Options

Ever since I've started to take interest into the occult and started to work with summoning I have always wondered whether servitors are actually seperate beings or just an extension of ourselves. I would think that since we create them and use are energy to give them life they must be apart of us but then I here these stories of servitors becoming stronger than their creators and running amok!
So any info on this would be greatly appriciated.

Thank You (IMG:style_emoticons/default/chuckyani.gif)

In my humble opinion...both. Just as you are part of your parents, but inherintly seperate, I see it as the same with servitors, we are there creators, and therefore take on the role of parent almost, and while they are formed from a part of us, the act of creating one requires that you focus and seperate that energy from yourself to create another being...
†Christopher Raven† (IMG:style_emoticons/default/wandwizard.gif)