Well, a Beast Boy in a Marvel fanfic could be really interesting. He could interact with characters like the X - Men. Maybe he'd form a friendship with Beast from the X - Men due to their similar abilities. They could team up to fight a common enemy.
Storm's power over the weather could be enhanced by Beast Boy's animal forms. For example, if Beast Boy turns into an eagle and flies into a storm cloud that Storm has created, he could disrupt the electrical charges in a way that Storm can then manipulate to create a more powerful lightning strike.
One idea could be that Beast Boy and Storm meet during a strange weather phenomenon caused by a new super - villain. Beast Boy, being able to transform into various animals, could use his abilities to help Storm, who controls the weather, to combat the villain. For example, he could turn into a flying creature to help her reach the source of the abnormal weather in the sky.
There are some fanfictions that might depict Beast Boy as a vampire beast in a post - apocalyptic world. He could be using his shape - shifting abilities in unique ways, like turning into nocturnal animals more easily since he has vampire traits. This type of fanfiction often delves into the darker side of his character and how he survives in a harsher world.
Well, Cyborg could also be a main character. He and Beast Boy are good friends, and Cyborg might have to adjust to his friend's new appearance and the changes that come with it. And then there's Robin. As the leader, he would need to deal with how Beast Boy's transformation affects the team dynamics. Maybe he has to figure out new strategies that take into account Beast Boy's new situation.
Maybe a girl with a similar power. For example, a girl who can communicate with animals telepathically. They would have a deep understanding of each other because of their shared connection to the animal world. They could go on adventures together, using their powers to help animals in trouble. Their relationship would be based on mutual respect for their powers and a shared passion for animals.
One possible fanfiction could involve Beast Boy and Storm meeting in a multiverse scenario. Maybe Beast Boy is on a mission in Storm's world and they initially clash due to their different powers and personalities. But as the story progresses, they start to understand and respect each other's abilities and end up working together to defeat a common enemy.
A common theme is the struggle between Beast Boy's humanity and his vampiric instincts. Since he's a beast at heart already, the addition of vampirism can create a complex internal conflict.
Another reaction could be that he tries to hide his feelings by putting on a brave face. He might joke around even more to cover up the fact that he's really hurt. But deep down, his feelings are still damaged and this could lead to some bottled - up emotions that might explode later.
Maybe his dark secret could be related to his past trauma before he got his powers. For example, he might have witnessed something truly horrifying that made him the way he is.