Mads's Links
(half sibling) They aren't close. Mads still resents him for some things that happened during childhood, even though they know logically it wasn't his fault. Even so, only they really understand how messed up each others childhoods were. Mads would like to offer Marquis some support, but he doesn't make it easy for them to work through their own resentment.
(half sibling) They hadn't seen each other for nearly 15 years, and they're practically strangers. Marquis gets the idea that Mads doesn't like him, and he's not going to press a relationship if they don't want to. Family means little more than a coincidence to Marquis.
(siblings) Mads is deeply protective of Nico. He's their little brother, after all, and he's in need of help. Since childhood, they've always had to be the tough one, stable for their younger siblings.
(siblings) Nico and Mads were already close before Nico was sent away, bonded by the mutual trauma of their upbringings. When they were reunited, A lot about them both had changed, but they still understand each other. Nico is a little dependent on Mads, since they're really the only one helping him. He does his best to help them in return.