Damian has autism, CPTSD, and does suffer from bouts of depression.
Shortly after Marsha got into knitting, she taught Damian how to do it and he now has knitting as a hobby.
Damian has a pet guniea pig named Peanut (II). While he got his pet (Peanut I) on his birthday, they had to be replaced after Heather killed his first guinea pig in front of him.
I’m only willing to ship Damian with those close to his physical age and with those who are or have the possibility of being immortal.
As a child, Damian had his hair short at his father's insistence but shortly after arriving on the surface world, Damian choose to grow his hair out.
Due to his small stature and long hair, Damian is often mistaken for being a girl by those outside of his family. And due to their similar appearances, Damian has also been mistaken for being Marsha on several occasions.
As a child, Damian's toys were toys mostly meant for boys. He was largely disinterest in most of them, opting to play with Marsha's toys for the most part. The only exception to this were his toy trains and his building blocks. Marsha's stuffed sheep Wooly, was one of the toys Damian loved to play with the most. When Hunson gave Marsha a replacement sheep plush, Marsha gave it to Damian, who named it Barney. While Hunson initially tried to get rid of it when they were 8, Marsha stole it back and kept Barney safe for him up until they left home. Damian still has Barney to this day.
Damian tends to fidget with his sisters' hair when he gets overwhelmed, something both Sarah and Marsha let him do.
When they were little, Damian developed a fear of nighthounds after witnessing Marsha being attacked by one. It wasn't until Marsha brought home Georgie that Damian slowly began to be far less afraid of nighthounds.
Damian's favorite book genre are detective novels and murder mysteries. Aside from books, he also like Ble, a comic magazine.