No one can say when or where-man has speculated this question since the beginning of time almost
Satan will only be summoned when he is ready.
No Where
page 308-309. linw 84-124. Satan's first speech
You can find them on youtube. Just look up how to worship satan.
Satan's sister
In the bible it states that Satan took one third of all angels with him. 2nd Corinthians 4:4
See the related question below.
It's just Satan still
Satan is satan in Swedish.
It's the same: Satan
Revelation 2:9 and 3:9.
There is no Damien or Damion mentioned in the Bible that I can find, Only in the movies.