Good Natured Demons

They could make them NPC's, vendors or familiars.

Hahahah, I just pulled this image off of Imgur earlier today too! We know that Johannes was the only dissenting voice against the Alchemist Guild's decision to bring demons to Earth in order to show the world they still retained much of their power .It is stated that he was good friends with Gebel so perhaps he was once an orphan himself, until he was adopted into the Alchemist's Guild?
I still stand by my desire to see a 'demon merchant' in the game. All his wares...for a price. Although the player might think the demon desire's Miriam's soul he's quite content with gold and jewel pieces. Or perhaps we'll see some form of incarnate lesser demon than assists Miriam if she brings trinkets to appeal to the demon. Similar in fashion to the talking birds from the Dark Souls series.

I'm certainly open to the inclusion of more civilized demons. Even many of the high ranking demons had order, law, and etiquette. This factor is often overlooked by storytellers, authors, concept artists, and creators.

For example... Renon from Castlevania 64 was always a favorite of mine in fictional works. While not fully malicious (yet with a few tricks), he was genuinely dedicated to helping you. Granted, he still had a job to do and would see it done, if need be. But if you did what most players would, and kept the amount you spent with him under 30,000... you'd learn that Renon was actually a pretty solid fellow.

The word daimon [dī’mōn’], with the meaning of “guiding spirit,” is a latecomer to English (earliest OED citation 1852). With its different pronunciation, daimon stands as a possible alternate choice for writers who want the sense of the word without the confusion with demon. Nevertheless, the spelling daemon has its appeal.

The three English words demon, daemon, and daimon all derive from Greek δαίμων (daimôn), the word for a spirit that served as a link between the human and divine spheres. Daimons could be benevolent or malevolent. They were much lower in the divine hierarchy than gods like Jupiter and Diana.

In first century Rome, a good way to make a pagan angry was to refer to all his gods as “daimons.” In Christian writings the word was used to signify “pagan god” or “unclean spirit.” Much later, when the Bible was translated into Old English, “demon” was rendered as “devil.”

One type of “daimon” recognized by pagans was a benevolent spirit, a “guardian angel” that attended the individual from birth to death. This personal “genius” was a kind of soul.

With this in mind, I don't see a reason for all demons to be evil. They're a race of individuals much like humans. Each with their own problems, answers, governing laws, and social structures. I think it would be excellent to view this side of the legends in a more intriguing light. The Shin Megami saga touches on such thoughts frequently, and I don't mind the idea at all.

I've known of a few settings where demons are occasionally or even often nice, but those are almost never 'traditional' demons, or else the setting is trying to grind an axe against traditional religious belief XD In the Myth Adventures series, there are plenty of good guy demons, but "demon" is just a catch all term for interdimensional traveler rather than a servant of Hell. Considering how evil Hell is, any 'good' demon would either be a rebel against Hell or not associated with Hell at all.

I always liked Vulgrim from the Darksiders series. He served as a merchant, but also gave insight from the demon side of things and he had his own agendas.

I'm glad Canopus mentioned Renon. He's also one of my favorite demons in CV  .

What I was taught years ago, was that demons were simply fallen angels. Angels in themselves look terrifying and alien, but are shrouded in literal light so it makes it harder for humans to really see how they look. "Demons" are angels without the light, and so if they let themselves get seen we see their true physical terror. (Similarly to this, humans did not see each other as nude before sin because they are shrouded in "holy light". Afterwards though, we lost that light and that is when we saw our entirety.) 

Some people are in favour with demonkind because they agree that we should live the way we want to live, that we have the right to make our own lives and pursue whatever comes across our minds. That is the reason they "fell". For their freedom. On the other hand, people are in agreement that 
we as humans are too chaotic in nature to ever do any good by ourselves, which is where most religions come into play. 

I'd love for there to be some civilized friendly demons, and maybe "enemy" angels as well if there are any in the source material. I really need to read more on that stuff because it all sounds very interesting. 

Ah yes I'm familiar with their doings. They mostly act as "drones" in a way in the Bible. Doing anything they are told from their leader(s) without hesitations. If they do it any other way or straight up disobey, they would be considered "fallen", or demons according to the scripture.  If they were in this game, I can easily see them as being our enemies if our goal is to save Gebel from his curse.

Oh, also I was referring to reading more on the Lesser Key of Solomon stuff since I have minimum knowledge on that haha. I really gotta get better at speaking more clearly. I appreciate the article link though! 

I fully support this dichotomy of both good and evil demons and, indeed, suspect that this will be the case; much of Japanese lore doesn't automatically polarize demons as being exclusively evil.

this is the englais definition for demon "An evil spirit or devil." mabye the japanese has a different meaning.