An important aspect is to make the OC's relationships with other characters believable. In the case of a DBZ Android 21 fanfiction, the OC could start off as an enemy to Android 21's allies, but then through a series of events, they prove themselves. Maybe they save Android 21's life at some point. Also, their power level should be balanced. Not too overpowered that it makes the story boring, but not too weak that they seem out of place. For example, if the OC has a power that grows over time as they face challenges, it makes their integration more organic.
To integrate an OC well, first, consider their personality. If the OC is a confident and brash character, they could contrast with Android 21's more complex and often reserved nature. Second, think about their goals. If the OC's goal is to find a cure for a certain disease that Android 21 might be related to in some way, it creates an instant connection and a plot thread. Third, make sure their appearance also fits the DBZ aesthetic, like having a unique fighting gi or a distinct hairstyle.
Give the OC a unique skill or trait that is relevant to the Sherlock universe. It could be something like an eidetic memory or a talent for deciphering ancient codes. This way, they can interact with Sherlock and the other characters in a meaningful way, either as an ally or an adversary.
Sure. 'The Android's New Purpose' is a great one. It focuses on an original character (OC) who is an android and their journey within the Dragon Ball Z universe. The story has some really cool fight scenes and character development.
It's the chance to explore new stories. With an OC, writers can create unique plotlines that the original DBZ might not have covered. For example, an OC android could have abilities that change the way battles are fought in the DBZ world.
The oc should have a backstory that ties in with the supernatural world. If it's a world of demons and angels, the oc's past could involve some sort of encounter with these beings that led them to be in this world now. This makes their presence more believable.
A Zoro OC can be well - integrated by having a connection to the existing world of One Piece. Let's say the OC has a dream related to the All Blue, just like Sanji. This connection to an existing concept in the One Piece universe makes the OC feel more at home. Their relationships with other characters are also crucial. If the OC has a friendly rivalry with Zoro, similar to Zoro's relationship with Sanji, it adds depth to the story. They can compete in sword - related challenges and in the process, both grow as characters.
The OC can be integrated by having a unique talent related to a cappella. For example, if the OC has an extraordinary beatboxing skill, it can be a great addition to the group's performances in the fanfiction. This would make the OC valuable to the Pitch Perfect crew and give them a reason to be part of the story.
First, give the male OC a believable backstory related to his past life and how it ties into the BNHA world. For example, if he was a scientist in his past life, his knowledge could be used to develop new support items for heroes. Second, have him interact with the existing characters in a natural way. He could start as a transfer student at UA and make friends or rivals with the canon characters. Third, give him a unique quirk that both fits the BNHA universe and is related to his past - life experiences.
The OC can have pre - existing relationships with some of the minor characters in the High School DxD world. For example, they could be an old friend of a side character who then gets introduced to the main group. This way, it feels more natural for them to be part of the story.
The OC's personality should complement or contrast with Deadpool and Cable's. If the OC is very morally upright, it can create great tension and comedic moments when paired with Deadpool's morally ambiguous nature and Cable's more rigid code. Also, giving the OC unique abilities that are relevant to the story's plot, like an ability to heal that is crucial in a battle - ridden fanfic world of Deadpool and Cable.
An OC can be well - integrated by having a backstory that ties into the existing lore. For example, if the OC has a family connection to an existing wizarding family or a significant event in the wizarding world's history. Also, their magical abilities should be in line with what we know about magic in the Harry Potter universe. They can't have some completely out - of - the - blue superpower.