Arthur and Merlin had an agreement that they wouldn't give their children everything they wanted because they didn't want them to be spoiled rich kids but whenever Arthur looked at his children he could never say no to them, especially the girls. 

Brantly was already fifteen years old. He took martial arts classes because Arthur wanted him to always protect his little sisters and he always did. He was one of those overprotective big brothers that always made sure you were okay and didn't let anything happen to you. Merlin was one hundred percent sure that when any of the girls started to date Arthur and Brantley would scare the boys or girls away. Brantley was very much a daddy's boy and always spent his free time around Merlin making sure he had his approval before doing anything. He already knew that he  would take over Arthurs business when he grew up and he was quite happy with that, of course, Arthur wouldn't leave all his inheritance to him when he passed away they had already signed some papers that in the case that he died all the money would go directly to Merlin, and if both he and Merlin passed away the money would be divided equally for all their children.  

Catherine was thirteen she was very beautiful and looked much like Merlin. She was a bookworm and always spent her time reading. She unlike Brantley was a papa's girl she admired Arthur and said she wanted to be big and strong like him when she grew up. She spent most of her time either reading books or drawing things. She had a passion for art. She would draw beautiful drawings of all the things around her and her favorite thing to draw was her parents together, to her her parents were the perfect couple better than any romance book she had ever read.   

Anais and Celine were ten years old and both had a passion for music whilst Anais loved singing Celine loved playing instruments. Anais and Celine were both papa's and they alongside Catherine would always fight over who got to spend more time with him. They created songs together in which Anais sang in and Celine played instruments. they had already decided that when they grew up they wanted to be in a band together.

They were the perfect little family and were almost always happy they obviously had their little fights like the time Merlin stopped talking to Arthur for a week because he wouldn't let him go to vegas alone for a teacher retreat but all Artur wanted to do was keep Merlin and they're children safe which he did.