I was having a conversation with @lokiostasis about Kieran (specifically the fully written Descendants AU i have for him...cough...) and midway she was like 'oh yeah a big part of his character is how he's born seemingly powerless but quickly gains way more than most people have/would think to use - he's power hungry as a coping mechanism for being weak'
and like. Yeah. Something about the wording feels so right, yk? I paraphrased it a little but I feel like using the word power hungry to describe a protagonist is so rare??? Like that's soooo him. He's power hungry!!! Maybe not for necessarily malicious intentions, but he is, and it's so telling of who he is.
Like an intrinsic theme/fact about Kieran is that he's not wanted, he wasn't wanted, was a mistake the moment he was born. Even before he was deemed Talentless (and that just made everything worse), he always knew that to be true. With that pairs this intense urge to make up for it in some way, whether that be friendship with Meris, obsessive exercise/strength training, or telekinesis. It's all a way he can protect himself, or feel protected. When that's risked in some way (such as Meris gaining an ability or he's questioned/challenged in some way), he gets really upset and destructive - his insecurities also play a big part as to why he immediately jumps to ruining himself so completely, because across his stories, it's like. Every time he must fully kill who he was in favor of something "better".
I jus think power hungry is a perfect phrase for him, just because of like - well yeah his desperation and intensity can't really be called anything else but hunger.