Characterization of Nappa and Vegeta in fanfiction can vary greatly. Vegeta is frequently portrayed as having a sense of honor, although it's a Saiyan - style honor that might not always align with what others consider moral. He is also shown as having a bit of a temper. Nappa, in contrast, is sometimes shown as more carefree in a way. He just wants to fight and prove his strength, not really thinking too much about the bigger picture like Vegeta often does.
In Dragon Ball Z fanfiction, Nappa and Vegeta have a complex relationship. Nappa is Vegeta's subordinate. Vegeta is often portrayed as the more dominant and powerful one. He bosses Nappa around. Nappa, on the other hand, is loyal to Vegeta, at least initially. Their relationship can be explored in fanfiction in many ways, such as how they interact during battles or how their Saiyan pride affects their bond.
Vegeta would also be a major character in these interactions. Their Saiyan bond could lead to different scenarios. Maybe Vegeta would be initially angry that Nappa survived but then come around to the idea of having him as an ally again. It could also be a source of conflict as they might have different ideas on how to handle certain situations.
In some fanfictions, Goku's death might be a sacrifice to save the universe. He could be facing an enemy so powerful that the only way to stop it is by giving up his own life. This would be a very emotional moment for his friends and family, like Chi - Chi and Gohan.
Power - up themes are common. Writers often explore how Nappa could become even more powerful, perhaps through new training methods or by unlocking hidden Saiyan abilities. It gives the character a new level of badassery.
In many Dragon Ball Z fanfics about Garlic Jr.'s death, one common scenario could be that he is finally defeated by Gohan. Gohan, with his increased power and determination, might outwit Garlic Jr. in a battle. Garlic Jr., who is often depicted as a power - hungry villain, could make a fatal mistake during the fight that leads to his downfall. Maybe he underestimates Gohan's new abilities or overextends himself in an attack.
There are various fanfictions that might explore Chi - Chi's death in Dragon Ball Z. Some might do it to explore how Goku and the other characters would react. In a sense, it could be a very dark and emotional take on the story, showing the grief and possible revenge motives of the characters left behind.
There are no such inappropriate 'Straight Shota' stories in the official Dragon Ball Z canon. Dragon Ball Z mainly focuses on epic battles, power-ups, and the adventures of Goku and his friends to protect the Earth from various villains.
One interesting concept could be Nappa's backstory before joining Vegeta. Maybe he had a family on Planet Vegeta that he lost, which could add depth to his character. For example, in some fanfictions, it's shown that he was once a kind - hearted Saiyan before the destruction of his planet turned him into a more brutal warrior.