Eschar

Eschar has never exactly been easy to get along with. She's one of the oldest of the system's alters, appearing as early as age 12-13, and her mission is to protect the system from abuse or trauma by any mean's possible, even if that means shaving off pieces of the system she perceives as being 'unsafe'. Near the beginning of her existence, she mostly bullied the host with the intent of making the host tougher and more resilient to abuse/trauma, but she's calmed down considerably since then. In terms of hobbies, she doesn't have many, but she seems to enjoy playing Final Fantasy XIV as her Au Ra self-insert.

It turns out she's behind the disappearing acts a couple of alters have nearly pulled, and she's dragged Domi (who she despises) into helping her get rid of a lot of parts of both the system and host: namely particularly 'indulgent' fictives and crushes. However, she at least consciously recognizes that this doesn't actually help or protect the system in any way, and while she's hesitant to believe that it's safe to settle down and let the system have hopes, dreams and comforts, she's willing to at least try and adjust, and help the parts of the system she's tried to kick out learn to feel safe and comfortable again.

At her core, she mostly just seems terrified of enjoying herself/letting the system enjoy itself. Too many judgmental eyes around, and way too many people who are dead-set on ruining whatever good mood the system has managed to clutch from its own trauma. Most harmless forms of enjoyment/indulgence scare her, and her first instinct is to shut it all down. But she's learning, she just needs patience and love.