Any super side character hc?
Koshe!
Koshe became an acolyte a little bit later in life
She was in a compulsory heterosexual marriage and one day just up and left the guy when she decided that she wanted to take a chance on living.
She didn't know exactly what she wanted to accomplish, but her cushy middle-class life with a husband who didn't love her wasn't where she wanted to be forever
She spent years walking around the Earth Kingdom with a group of earthy-crunchy hippies. (think "secret tunnel" guy). She learned a bunch of odd jobs and saw the full range of human experience in others and got a good dose of it herself.
Before leaving home she didn't know that life could be so full of both the good and the bad
It made her humble and kind
She started keeping journals describing her journey
She never went back home
Whenever she would find young street urchins in her travels, she would take them under her wing until she got them to a place they would be safe
Koshe is a patron saint of sorts to the dozens of kids she helped out over the years
A small part of her always wanted the kids to stay, but she knew she wouldn't be able to provide stability for them, so she settled for just helping them out in moments of need
She always cried when they left
Eventually, she got her fill of wandering. She was getting older, her body was slowing down, the winters were long and the summers were hot. Sometimes the kids she "fostered" went with Air Acolytes when it was convenient. She knew enough about the acolytes to trust them, and the next time she crossed paths with some of them, she joined them and ended up at the Northern Air Temple
A few years later she was greeting the new recruits, one of them was Pema. The two of them have been inseparable ever since