I know only Gabriel could change his gender thats what i know.. I do see where dragon is coming up with that. its from a show which shows a different side of how Lucifer fell. it makes more sense then most of the stories and would fit into this Rp alot better then different ideas.

Its from a show called SPN.

Here is the quote from Lucifer that explains it
"You know why God cast me down? Because I loved him. More than anything. And then God created...you. The little...hairless apes. And then he asked all of us to bow down before you—to love you more than him. And I said, "Father...I can't." I said, "These human beings are flawed, murderous!" And for that...God had Michael cast me into Hell. Now, tell me...does the punishment fit the crime? Especially when I was right? Look at what 6 billion of you have done to this thing. And how many of you blame me for it?"

This is what i think the rp is based off this part of the character. its actually really cool part of the idea of falling from grace.