Perhaps Gohan gets so neglected that he decides to leave the group and find a new mentor. He could stumble upon an ancient and powerful being who trains him in a completely different way than Goku or Piccolo. This new training could give him unique powers and a new outlook on life. He then returns as a changed and more powerful character, much to the surprise of his former comrades.
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 some Dragon Ball Z fanfiction where Gohan is neglected, it might explore how he copes with the lack of attention. Maybe he turns to self - training more intensely. He could also form unexpected friendships with other characters who notice his isolation.
One possible plotline could be Gohan exploring the new powers of Super Saiyan 5. He might face a new, extremely powerful enemy that even the other Z - fighters can't handle. For example, a powerful alien from a far - off galaxy who has come to Earth to claim it as his own. Gohan, in his Super Saiyan 5 form, would have to learn to control his power quickly to defend his home. Another plotline could involve Gohan training others to reach the Super Saiyan 5 level. He could start a new school or training regime on Earth to prepare the younger generation for future threats.
One interesting plot could be Gohan trying to balance his Saiyan powers with high school life. For example, he might accidentally use his super strength during gym class and have to cover it up.
A plot could be Gohan using his Super Saiyan 3 form to explore uncharted parts of the universe. He discovers new races and powers, and has to use his form to either protect or learn from them. For example, he might find a race that has a power that can enhance or even rival his Super Saiyan 3 state.
Maybe in the fanfiction, Gohan could hate Videl because she's too overbearing. She's a strong - willed character and might push Gohan in ways he doesn't like.
One great fanfiction could be about Gohan and Piccolo's training sessions. Gohan, with his Saiyan - human hybrid power, and Piccolo, the Namekian, could be exploring new ways to increase Gohan's power. Maybe they discover a new technique while sparring in the wilderness. This would not only strengthen their bond as mentor - student but also as friends who rely on each other in battles against stronger foes.
One possible fanfiction could be about Bulma helping Gohan with his studies. Since Bulma is super smart, she could tutor Gohan in advanced science and technology. This would not only strengthen their friendship but also give Gohan new knowledge that might come in handy during his battles. For example, understanding the principles of energy and mechanics could help him better strategize against his enemies.
Kid Videl could develop her martial arts skills to a new level by training with Gohan. This could lead to her becoming a more respected fighter in the Dragon Ball Z universe. She might also become more empathetic towards Gohan's dual - identity as a Saiyan and a normal kid. In some fanfictions, she could start to understand the responsibilities that come with great power, similar to what Gohan has always dealt with.
One possible plot could be that in a world where Naruto characters co - exist with Dragon Ball Z characters, Naruto is so focused on his own ninja world problems that he completely overlooks the power and significance of the Dragon Balls. For example, villains from the Naruto world might accidentally stumble upon the Dragon Balls and try to use them without understanding their true power. Meanwhile, Goku and his friends are trying to retrieve the balls from this new, unaware threat.
One great fanfiction could be 'Gohan and Goten's Training Adventure'. It shows them training together in a unique way, exploring new techniques and facing challenges that the original series didn't cover. It really captures the essence of their relationship as brothers and their growth as Saiyans.