I'm not sure specifically what 'angelus graphic novel' is about as there could be many different stories with that title. It might be about an angel - named Angelus perhaps - and could involve various adventures, conflicts, or a journey of self - discovery in a fictional world.
You could try looking for it in local comic book stores. They often carry a wide variety of graphic novels.
I'm not sure specifically as there could be many different 'angelus Harry Potter fanfictions'. It might be a fan - created story that involves a character named Angelus in the Harry Potter universe. Maybe it's about how this character interacts with the main Harry Potter characters, or perhaps it's a completely new adventure set within the magical world of Harry Potter.
One interesting Angelus Fortuna fanfic could be a story that delves into his origin. It might explore how he came to be and what events in his past shaped him into the character he is. Maybe there's a fanfic where he teams up with an unlikely ally, like a character from a different realm, and they go on an adventure together.
The exploration of power dynamics is also important. Angelus has his vampire powers like super strength and immortality, while Harry has his magic skills. How they use these powers in relation to each other and the challenges they face is a big part of the fanfiction. Also, the moral and ethical questions that arise when a vampire like Angelus enters the relatively more 'innocent' world of Harry Potter are often explored. For example, how the Hogwarts students and teachers deal with the presence of a dangerous vampire, and whether they can trust him or not. This adds a layer of complexity to the stories.
One common theme is the struggle between good and evil, especially with Angel and Angelus. Since Angel has this dark side in him, a lot of fanfics explore how he tries to keep Angelus at bay while also being with Buffy. Another theme is love and sacrifice. Buffy often has to sacrifice her own feelings for the greater good when it comes to Angel and Angelus.
Love and sacrifice also play a big role. There could be a situation where Angelus has to make difficult choices to protect Buffy and the unborn child, or Buffy might have to sacrifice her slayer duties to some extent for the sake of the pregnancy. These themes of love, protection, and sacrifice are often central in such fanfictions.
Common themes include the duality of their natures. Buffy is a hero, and Angelus is a villain, yet they are drawn to each other. The theme of secrecy also pops up often. Their relationship can't be out in the open easily. Lust is a very obvious theme considering the 'lemon' nature of the fanfiction. But there are also themes of sacrifice, where either Buffy or Angelus might have to sacrifice something for the other or for the greater good in the context of their relationship.
Another possible theme is the struggle between good and evil within the context of their relationship. Angelus has his dark side, and Xander represents the more normal human side, so their interactions can be a study of how these two elements interact.
The plot could involve Harry being shunned by the wizarding world because of his unusual parentage. He might then have to find his place in a world that doesn't accept him, all while trying to understand his connection to Angelus. And perhaps there could be a journey where he tries to learn more about Angelus's past and how it relates to his own future. Also, there could be a conflict with those in the wizarding world who see him as a threat due to his vampiric heritage.
Popular themes often include redemption arcs. If Angelus were human, how would he seek redemption for all the wrong he did as a vampire? Also, love and friendship are big themes. Fans like to write about how Buffy and Angelus could have a more 'normal' love story as humans, or how their friendship could develop in a different way. There are also themes related to the challenges they face in a human world, like dealing with mortality, which is very different from their vampire - filled existence.