You CAN'T request characters! So please stop asking me to add the others.
I won't do scenarios about cheating, breaking up or making up either because I hate writing those. I won't do scenarios about babies because I dislike them. I won't do scenarios like "How you met" or "What your pet is" because those things are all up to you to choose.

Lucifer:

He will just glance before ignoring you. Eventually he will get annoyed fo the camera in his face so he will snatch it before saying you will get it back when he's done with his work. So when he's finally done with work, he will return the camera after having deleted the bad pictures of him.

Mammon:

He will immediately smirk, he will be smug, saying stuff like "Of course you would want to take pictures of me", "Take them from my good side", and "Look how amazing I am". He will immediately snatch your camera when you're done taking pictures and judge the pictures, deleting the bad ones while praising the good ones.

Leviathan:

He will blush, a bit embarrassed while covering his face with his arm, telling you to stop. When you leave, he will be nervous, hoping they look good and he doesn't look dumb. He will get embarrassed when you send him a picture of himself with a text "You look handsome~".

Satan:

He will sigh and ask what you're doing. When you tell him taking pictures of your handsome boyfriend, he can't help but smirk before continuing to read his book, trying his best to look good while doing so. Whenever you praised him, his cheeks will turn red and he will raise his book to cover his face.

Asmo:

He will immediately pose, usually they involve him showing a bit of skin. He loves taking selfies with you. He always wants to look beautiful, but if you're upset and want to take silly selfies to cheer up, he will happily do it. Of course when you fall asleep he will delete them. His screen when he opens his phone is of you and him posing beautifully, but when he slides his phone open, it's a picture of you and him posing silly. Whenever he is upset, he will look at it and cheer up.

Beelzebub:

You take most of his pictures that he has posted on Devilgram. Sometimes when he's at the gym, you will take pictures of him. He will get a bit embarrassed but also work harder to look tough. When he's eating, he doesn't give a damn whether you're taking picture of him or not, he's too focused on his delicious food.

Belphegor:

He won't give a damn, he will just turn and go back to sleep. Sometimes he will throw his pillow at you, yelling you're disturbing his nap. When you praise him for being so handsome, he will just roll his eyes and say "Of course". He doesn't mind if you publish the pictures on Devilgram, as long as he looks good in them. Sometimes as revenge when you are about to sleep, he will start taking pictures of you.