We know Carla cares about Shin but he never expresses it in a way that Shin realises it. You can get an idea of what it might look like if you examine Carla’s interactions with Shin in early material. If someone hasn’t broken through the ice shell he surrounds himself with before he has children, then he’s going to be a very strict parent, and while he would have some affection for his children, they probably wouldn’t ever realise it until he told them so while on his deathbed. One thing with Carla is that at the start of Dark Fate, he’s struggling to balance his own emotions with the feelings of duty he has as Giesbach’s son and the current Founder King-which is to say his emotions are trampled on and ignored over whatever he perceives his duty as king to be. If we’re talking about a scenario in which they’ve fulfilled their goal of carrying on the founder race without forming any sort of attachments to someone beforehand, then that’s when you’d see some problems. I think they both have the capacity to be at least halfway decent parents but it would depend on them having someone (probably their respective S/Os) knock some of their edges off first. Short answer: It depends on the circumstances. Trigger warning for some reference to child abuse (partly because I’ll be bringing up Carla’s backstory).

Carla tsukinami voice actor