Talk:Demon Lord/@comment-24862435-20150316122121/@comment-24169511-20150316125232

They've already battled the Chief God and were able to wound her so badly that she went into full retreat and is currently hidden away in Heaven recovering.

As for overthrowing her, no clue. While the Monster Army might be strong, I imagine the whole combined force of heaven (All angels and servants, all the other gods loyal to the Chief God, etc.) is still a very formidable power.