TCF Headcanon
Because Cale kinda plays the roles of Mother and Father, each kid calls him something different.
Lock and Wolf Children call him Uncle; it started with Lock calling him Uncle, since he reminds Lock of his actual Uncle, and then the Wolf Children kinda just copied him.
Raon more often than not calls Cale Human, and rarely Cale, but very rarely he'll call him Father, and once after a bad nightmare he called Cale Daddy.
It takes On a while, but she eventually starts calling Cale Dad, sometimes in the privacy of their house/rooms, when its just Cale, Her, Hong, and Raon, she'll call him Papa.
Hong, though, pretty easily and openly calls Cale various versons of Mom. He'll call him Mom or Mother when its a serious situation, Mommy when hes begging or asking for something or is being a little sh*t(pos), but he uses Mama most often regardless of where they are or what they're doing.
Hong was the first to start calling him Mama. It started up a bit after the terrorist attack at the King's birthday. A few months later, after hearing Hong calling Cale Mama all the time, On called him Dad for the first time. The first time Raon called Cale Father was soon after the Henituse War, but it was when everyone else was asleep, Raon couldn't sleep and curled up around Cale's throat, Cale, half asleep reached up and pet him, and Raon said "Goodnight Father."
Cale quite litterally does not care. Well, okay that sounds bad, he's secretly touched of course, but he doesn't care what the children call him as long as they're comfortable with it.
Alberu tried to tease Cale once about Hong calling him Mama, and it made Hong really upset. The searing glare Cale sent Alberu was so bad he had nightmares about it for a month.
