do I even want to know who Margoth is? If its a movie or comic or anything "pop-culture" related then I have NO idea.
It's Super Tolkien Geek to the Rescue!!!!
Morgoth is from the works of John Ronald Reuel Tolkien, scholar and author of "The Hobbit", "The Lord of the Rings", "The Silmarillion", "Smith of Wooton Major", "Farmer Giles of Ham", "Beowulf, the Monster and the Critics" and more. Professor Tolkien also contributed to the Jerusalem Bible translation, particularly the Book of Jonah.
Morgoth is basically like a fallen archangel in the cosmology of Tolkien's "Middle Earth". He is part of the "Silmarillion" and the first part of that book the "Ainulindale" or "Music of the Ainur" tells of his jealousy and desire for power.
Eru Illuvatar is God in that universe. He creates the Ainur
, beings like angels who come together as part of the music that God has devised to create the heavens and the earth. There are 2 ranks, as it were, of the Ainur
: the Valar
are the greater and the Maiar
are lesser in scope or power who help them. Morgoth was once one of the most powerful of the Valar (there is a parallel with Lucifer here). Morgoth's name was first "Melkor" but after his doing much evil he was given the epithet of "Morgoth" or the Dark Enemy by the Eldar or Elves who had suffered greatly from his temptations and malice.
After much destruction and evil, Melkor is finally taken prisoner by the other Valar and removed from the circles of the world. Unfortunately, he had maia
who helped or wanted the same control of other beings and power. One of them went on to be called Sauron the Dark Lord who did such deeds as cause the drowning of Numenor, the forging of the Rings of Power, and much evil in Middle Earth which is told in "The Lord of the Rings".
Be warned, I could go on on matters Tolkien for quite some time.
Here's the Wiki link: http://en.wikipedia.org/wiki/Morgoth