Perhaps in the fanfic, Garlic Jr. discovers a powerful ancient artifact that he thinks will make him invincible. But the artifact has a hidden curse. As he uses its power, it slowly drains his life force. The Z - Fighters take advantage of his weakened state and finish him off. This would add an element of irony to his death in the fanfic.
A fanfic might also have a plot where Garlic Jr. makes a deal with a more powerful villain from another dimension. However, the deal backfires on him. The other villain double - crosses him during a battle with the Z - Fighters. This leaves Garlic Jr. vulnerable, and he is quickly dispatched by Goku or one of the other heroes.
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.
Well, it's unique because Garlic Jr isn't as well - known as some other Dragon Ball villains. So a fanfic can really delve into his character in ways the original series didn't. It can give him more depth and complexity.
One interesting 'Dragon Ball Garlic Jr Fanfic' could be the ones that explore his backstory more deeply. Maybe a fanfic where we see how he became the villain he is in the Dragon Ball universe. It could show his early life on his home planet and what led him to have such a vendetta against Goku and the others.
A possible plot could be Gohan focusing on his academic life more. Since he's neglected in the fighting and superhero side of things, he throws himself into his studies and becomes a super - intelligent character who uses his brain to solve problems in the Dragon Ball Z world that others can't with just brute force.
In a fanfic, it could be that Android 21 has a hidden power that only Goku can unlock. As Goku helps her discover this power, they form a deep bond. This power could be related to the Dragon Balls in some way, like having the ability to control the Dragon Balls' wishes or even create new Dragon Balls.
One interesting plot could be Dark Goku's origin story. Maybe he's not just an evil version of Goku but has a more complex backstory involving some dark magic or a different dimension's influence. Another plot might involve his battles against the Z - fighters. How he uses his unique powers against them and the strategies they come up with to counter him.
Another potential rival could be a young, prodigious martial artist from a new school of martial arts on Earth. This character could be jealous of Goku Jr's fame and constantly try to outdo him in battles and in the eyes of the public. He might use unorthodox techniques that Goku Jr has to quickly figure out how to counter.
One alternative is to focus on character backstories. You could write about the early days of Piccolo, how he came to be the way he is. Another option is to do crossovers with other non - sexual universes. Maybe a story where the Dragon Ball Z characters meet characters from a magical anime world and they have to work together to solve a problem. Also, you can write about the relationships between the characters in a platonic way, like the deepening of the friendship between Gohan and Krillin.
Perhaps in a fanfiction, Gohan dies protecting his family. He stands against a powerful foe that targets his loved ones. He endures a brutal battle, but in the end, his injuries are too severe. His death shatters his family and friends, and the Z - fighters are left to pick up the pieces and continue the fight without him.
One interesting crossover could be a battle between Hulk's brute strength and Goku's Super Saiyan power. Maybe in the fanfic, they start off as rivals, with Hulk misunderstanding Goku as a threat to Earth. Their fight would be epic, with Hulk's limitless rage against Goku's increasing power levels. It could also explore how their different universes' power systems interact.