
Wait a sec... Aren't Lucifer and Satan the same being? Why are they two different demons here?
Is it just me getting confused??

Yes and no, depending on version of things you're looking at. 'Lucifer' as a name is actually a mistranslation of the original Hebrew, and was never part of the original texts - if I recall correctly that came into use as a name in the middle ages, though I'm not 100% sure on that.
Anyway, this is taking more than casual liberties with Judeo-Christian lore, so just enjoy it as a work of fiction...

Dal momento che sei anche tu italiana, ti lascio questo link senza tradurlo.
Mi sono fatta la stessa domanda e ho trovato risposte interessanti qui ;)
http://www.latelanera.com/divinita-demoni-personaggi/dio-demone-personaggio.asp?id=279

Ok, one thing is being nice, another is trying to save someone who tried to kill you and save himself by almost killing a child. You're just being stupid. He's gonna take revenge and it's going to be your fault ╮( ̄▽ ̄)╭
Please Tora keep making those choices, although scared you're the only one truly thinking. As if to tie up a chicken would be a good idea... ( ̄∇ ̄")
Teo is half-wolf and half-dog... Now the cuteness is explained (づ ̄ ³ ̄)づ