Oh look, another Magnus Archives character parallel I think about non-stop:

Something, something, two characters who become deeply resentful of their situation and let their rage guide them because that’s the only way they know how to cope with being forced serve an evil entity despite their best efforts to limit their involvement. Something, something, about them being character foils to Jon and Martin who tend to lean toward the fears instead of away from them. Something, something, both of them being the only (likely) two who would blind themselves to get away from The Institute. Something, something, I love them.