Sure was. The movie Mask of the Phantasm took elements and storylines from the Batman comics to create its narrative. It stayed true to the comic's themes and characters to a large extent.
Maybe Alfred is disappointed because Bruce in the fanfic makes some unwise decisions as Batman. For example, he might take excessive risks that could endanger his life or the safety of Gotham in a way that goes against Alfred's advice.
One idea could be that the OC is a childhood friend of Bruce's who has a unique skill, like being an expert in ancient martial arts from a far - off land. They could influence Bruce's training and view on justice in a different way. For example, they might introduce him to more spiritual aspects of combat and self - discovery.
One of the great Batman Black Mask stories is 'War Games'. In this story, Black Mask plays a significant role in the complex web of Gotham's criminal underworld that gets entangled in a large - scale conflict. Another good one is his origin story which shows how he became the ruthless crime lord, with his unique mask and all. Also, his encounters with Catwoman add interesting layers to the stories as they have a sort of cat - and - mouse dynamic within Gotham's seedy side.
One possible reason could be that Bruce is being too reckless in his Batman activities. Alfred, being the caretaker, might see Bruce endangering himself unnecessarily and decides to punish him to make him more cautious.
I'm not sure specifically about 'phantasm adult fanfiction' as the term 'adult' in this context might refer to fanfiction with mature or inappropriate content. However, generally, fanfiction is fictional writing based on existing works. But we should avoid engaging with adult - themed fanfiction due to ethical and moral reasons.
In this fanfiction scenario, Poison Ivy may initially be angry. She might feel betrayed if she had some sort of relationship with either Bruce Wayne or Batman before. She could also be a bit jealous, thinking that Batman has been hiding this huge part of himself from her. However, on the other hand, she could also be impressed by the lengths Bruce goes to protect the city. This new knowledge could lead to a whole new dynamic between her and Batman, with her either becoming an ally or an even more dangerous foe, depending on her motives and the events that unfold in the fanfiction.
She can also be portrayed as a symbol of hope in Gotham. In some fanfictions, her presence brings a new dynamic to the city. She might inspire other young people to stand up against crime. Her character could have a more empathetic side compared to Bruce, reaching out to the victims of crime in a way that Batman doesn't always do.