I honestly don't like it when writers portray Hades as the "devil". In fact, the concept of any God being “evil” (or even what we’d now consider morally “good”) doesn’t really fit with Greek religion and myth. All of the Olympian Gods were flawed and spiteful: just look at Zeus’s constant myths involving sexual assault, many a vengeful, murderous God, or you know, the entire Trojan war. I know its just fanfiction but I kinda wish that writers educate themselves on Greek mythology, if they want to write a story pertaining to it.