What if there were different species of demon/angels for QSMP?
I'm thinking specifically for Bad, I like to think that he's more 'demonic' (for lack of a better word lmao) than Mouse and Tina who look a bit more human. Bad cloaks himself to hide his demon form.
Bad is a type of demon which is similar to a 'fallen angel'. He was born human, but was granted angel-hood by his patron (something very rare- only happening a handful of times). From there, he spent centuries living out his life until one day, his patron grew bored. Bad doesn't know why he fell- not truly, but because of the years he spent as an angel he still holds some of the habits of one (such as not cursing). Because of his fall he has a more gore-y look than the other demons and he is seen as 'cursed' which tends to make other demons stay clear of him (Mouse and Tina being some the only ones who have ever stayed long enough to talk to him). Eventually he gains the morals of a demon (like we saw in Purgatory) but theres a few things that he can never shake.
Phil on the other hand is a 'risen demon'. He started his life as a demon with feathered wings. He spent more time in the Vverworld than the nether, gaining friends and family while adventuring. One day he gained the attention of a goddess- Kristin- who eventually would give him the title of 'The Angel of Death' to allow him to stay with her in her dimension. That why he may appear to act more 'devilish' (cursing, killing, 'adopting' children)-he knows he can get away with it because he's married to the Goddess of Death.