Man, the angel-demon hybrid trope is so hit-or-mill for me. On paper, it’ s about balance, but a lot of writers just use it as an excuse to have a hot, brooding character with tragic backstory who’ s mostly just… edgy and powerful. The real balance, when it’ s done right, isn’ t a 50/ 50 split of good and evil deeds. It’ s about the internal logic of their morality being completely different from a human’ s or a pure-blood’ s. Like, maybe they see 'mercy' as a weakness (demon side) but feel compelled to protect the innocent due to a profound, almost cosmic sense of justice (angel side), not out of compassion. That creates genuine conflict, not just angst.
I think a masterclass example is Rin from 'Blue Exorcist'. His struggle isn’ t about choosing to be good or evil most days; it’ s about the demonic power he inherits being fundamentally destructive, while his human/angel-adjacent upbringing makes him want to use it for protection. The 'evil' trait is the raw, chaotic nature of the power itself, and the 'good' is his will to channel it. It’ s less about balancing personality traits and more about balancing two opposing natures that both feel intrinsic. That’ s way more interesting than a character who is just sarcastic (demon) but secretly donates to charity (angel).
Sometimes the best balance comes from the character rejecting both sides entirely and forging a third path. The hybrid isn’ t a midpoint on a line between two extremes; they’ re a new point on the graph altogether. Their moral compass can be infuriating to readers who want clear good/evil labels, which is kinda the point. I lean towards stories where the hybrid’ s very existence is a philosophical challenge to the universe’ s binary system, and their 'balance' is just them trying to survive in a world that wants to categorize them into a side.