The hell race Options

Is is possiable for one person to have been a demon at one point in time if so how would you bring back those kind of past life energys and what effect would it have.

On the same subject if a person was born from a demons meddling and the line became weaker through the years because of diloution from human blood would it be possable to some how tap back in to that lost streght and gain it back by one member of that faimly chain centurys down the line

thanks for the advice i shall look in to it and no i dont even know what that is but im only asking out of the possiablity of such a thing happing i hear from quite a few people who seem to belive they are or where a demon at one such point in time and that at any time of there wishing they can just puff pull on all that raw dark enegry and act apone there whim i only wished to know if such a thing where possiable how that is all but thanks.