I read Umbreon/Flareon-anon's stories about Adrian. I think they're generally good. You portray the characters and their interactions very well. They have distinct personalities, and their behavior and conflicts feel natural. You've expressed concerns that your stories are too edgy, but I wouldn't say that, since the only real source of edginess comes from Adrian being so disagreeable all the time. If you're concerned about him being too edgy, I do think there's lots of potential for him to mellow out and become a better person over time, which would make for a great overarching storyline/goal for him.
I do have a bit of general criticism about dialogue tags: consider not using such a big variety of words for them. Simple talking words like said, asked, or yelled are usually sufficient. More complicated words like proclaimed, chimed, questioned, etc. can be distracting. It's better to depict body language or write your dialogue in a way that conveys how the dialogue is spoken, without having to rely on special tags that contain additional info within them. Now, this is advice I've frequently seen other people provide, and I think it has merit, but I believe special dialogue tags can be used if you do it sparingly.
Anyway, I'll now give some story-specific feedback:
>Adrian's Intro>https://pastebin.com/tLSf0AN5I kinda liked the snappy pace, and didn't notice any major grammar issues. Nothing too interesting or surprising happened, but I can forgive that since it was just an origin story.
>Adrian's New Team>https://rentry.org/TeamMoonshineThe plot felt unsatisfying. It seemed to be setting up a central conflict about the characters hating each other and learning to work together by the end... but they immediately started working together upon entering the dungeon. It would've been better to emphasize their infighting during the dungeon before putting aside their differences in the end.
1/2
