He could be a time - traveling character. Imagine Rhaegar from his own world ending up in the Harry Potter universe. He could be a key player in changing the course of certain events. For instance, if he has knowledge of a powerful dark magic that is starting to emerge in the Potter world, he might use his skills to counter it.
As a magical prodigy from another world, he might introduce new forms of magic to the Harry Potter universe. This could open up new plotlines where the Hogwarts professors are both intrigued and a bit wary of his abilities. He could start a new school of magic thought that challenges the traditional teachings at Hogwarts.
A bartender in a Harry Potter fanfic can play a really interesting role. They could be the keeper of secrets in a wizarding pub, like the Leaky Cauldron. They might overhear all kinds of gossip and important information from the various witches and wizards who come in for a drink. They could also be a source of magical items or potions that are not easily available elsewhere, sold under the table perhaps.
They could be a source of power. If a character needs a powerful object or potion, the alchemist might be the one to create it. Maybe the alchemist has the ability to create a stone that can grant immortality, like the Philosopher's Stone, but with a different twist in the fanfic. This would attract the attention of both good and bad characters, leading to a complex web of events.
It could be a messenger. Since bunnies are fast, a French bunny could be used to deliver important letters or small items between wizards in the fanfic.
It could be a symbol of strength. Maybe the character with the metal arm has overcome a great danger and the arm is a reminder of their survival and new - found power.
In some Harry Potter fanfic, eggs could be used in potions. For example, they might be an ingredient for a magical elixir that gives the drinker a short - term boost of energy. Eggs could also be part of a magical creature's diet. Some fanfic might depict Hagrid using eggs to feed his various magical beasts like baby dragons or hippogriffs.
In some Harry Potter fanfics, Rhaegar might be portrayed as a mysterious figure from another realm or time. He could be a mentor - like character, using his wisdom from his own story's context to guide Harry or other characters. For example, he might share his knowledge of magic that is different from what is commonly known in the Harry Potter universe.
She could play the role of a villain. Maybe she's secretly working for Voldemort or has her own evil plans to take over Hogwarts. In some fanfics, new characters are created to be antagonists.
Hit Wizards in fanfic can also be a source of mystery. Since their work is often secretive, fanfic authors can create all kinds of backstories and abilities for them. Some might be former criminals themselves who were given a second chance and now use their skills for good. Others could be from long - lost wizarding families with unique magical abilities that make them especially effective at hunting down dark wizards. Their presence adds an element of danger and excitement to the fanfic world.
She could be a mentor figure. Just as Sherlock Holmes is known for his brilliant mind, Mummy Holmes could pass on some of that wisdom to the young wizards. For instance, she could teach them how to observe details more carefully, which is useful in both detective work and in dealing with the often - tricky magical situations at Hogwarts.
They can play the role of mentors. Imagine a young Hogwarts student who is having trouble with a particular type of magic, and a Witch of Salem appears and teaches them an alternative way of approaching it. This shows how they can bring in new perspectives on magic.