oh boy. i'll just go over everyone.

Camilla Spiritually pings as a demon! She also eats and tortures and otherwise is horrible to humans in particular but basically everyone to some degree. She is however totally not conflicted about this and thinks it's a-ok so she wouldn't ping as having emotional issues.

Guren (hewhofightsmonsters) is undead (a vampire) and has Boatloads of issues wrt not being able to protect people, being Very Angry about being oppressed or badly hurt in various forms, and sucks at dealing with his troubled feelings a lot. He's a lot of self-hate and other bad shit under heavy pressure.

Ein (grazing) is a human brain inside a mecha with an extra robot body. He is also CRAZY ABOUT VENGEANCE and basically lived for months purely to KILL THE PEOPLE WHO KILLED HIS MENTOR. Now he lives to kill the people who hurt his bff. He's also half martian in a world where martians are an oppressed class so the foundation of his vengeance issues is "everyone was mean to be for being part martian and no one loved me until this One Paternal Figure who then was killed by ungrateful martian children that he tried to be nice to".

Aymeric (reformational) is a pure maiden I'm sorry. He has very little except maybe the habit of putting aside his wants and needs as a person in favor of dedicating himself to duty and his country, and that he's carrying the weight of people who've died under his command as a leader. He's also the elf pope's bastard by a lowborn woman and had to deal with being looked down on for that but he was adopted by an emotionally healthy rich family so he really has not had it that hard comparatively.