The short answer(s)
= Resister. Rebel.
= Shining one or Morning Star - may not apply specifically to the chief resister.
= Owner, or Lord. Also not specific to any one resister.
refers to one who joined Satan in his rebellion.
Don't have a handle on Mephistopheles, as yet.
The heavenly name given to Satan is not known and probably will never be known to humans because of its ignominy.