Can I Ask About Atmos?

Can I ask about Atmos?

What is his AU like?

I'm stuck on trying to decide if the AU should have the background structure of somewhat similar undertale time-line but different or something where it's like Dreamtale's unique world structure as I have ideas on both ends.

But the main idea is that the AU can withstand any weather, environmental, and pollution like conditions, almost like a environment themed AU, except that everything is based off of the atmosphere, the temperature, the air, the way it is shifting around.

Atmos himself tho, he's a work in progress but I'm definitely confirmed that he is a peaceful boy. He absolutely loves adventuring around the Multivers and that he just never gets bored, you could literally put him in Classic Sans guard station with absolutely nothing and he'd still love it even though he'd just be sitting there smiling.

He has the ability to change the atmosphere around him as weather and environmental conditions. Even tho I have his title saying "Guardian of Weather and Change" I'm probably going to swap "Change" with "Environmental" here soon as to get my idea across better. He also has the ability to adapt to his surroundings, making him pretty much immune to sickness by catching it, but he is a delicate boy as he can be sickened by pollution, at any level, that's why he must have the most cleanest environment around him at like all times, I mean this is probably a stupid part of my design for him.

Atmos a joyfully been, he doesn't let stuff really get to him, and nor hangs onto anger for long, he can be very shy at times, to the point that the only way he can interact with anyone new is if he's escorted by one of his closest friends. He absolutely loves to bake sweet goods, mainly cookies when he isn't doing his guardian duties, which he will skip to just bake all day.

His scarf is made out of clouds and when he's wearing it, he is connected to it, as in he can feel threw it. He can make the scarf stands longer when he wants to fly around or to make himself more threatening looking in his fights. When he uses his magic as well, his ice lavender colored eyelights glow a neon electric purple, and purple electricity starts sparking of the strands of the scarf. This doesn't happen often as he does his best to avoid fights of any kind.

I know that isn't the best description of my AU, but I did kinda jump in head first with a very weak idea and now I'm trying to actually make it work. I still have a lot to do one it, mainly the dang background stuff, like what does the world look like and act like. Sorry if this didn't completely answer everything that you probably wanted in asking me about the AU. Hopefully I can answer more later on for you. ~•^-^•~