Maybe a powerful demon who has the ability to possess animals. He uses this power to send hordes of possessed animals against Gohan. His goal is to drain Gohan's energy and use it to break free from a magical seal that has been confining him for centuries. He sees Gohan as a threat to his plan because of Gohan's strength and connection to the Dragon Balls.
In fanfiction, Gohan could have an encounter with a wolf in many ways. Maybe the wolf is a magical or mutated creature in a story where Gohan has to protect the forest it lives in from some greater evil. The wolf could also be a spirit guide of sorts, leading Gohan to a new power or a hidden place full of secrets.
One idea could be that Gohan discovers an ancient animal with special powers. Maybe it's a mystical deer that can enhance his ki when he's near it. Another plot could involve Gohan turning into an animal himself, like a powerful eagle, and having to learn to control his new form and its abilities. Or perhaps he befriends a group of talking animals who help him in a battle against a new enemy.
A really interesting fanfiction could be set in an alternate universe where Gohan and Videl are the leaders of a new Z - Fighter team. They have to train a group of young and inexperienced fighters. This would involve them teaching their own unique fighting styles and strategies, and also dealing with the politics and rivalries within the fighter community.
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.
A fanfiction could explore Gohan's Ultra Instinct in a training scenario. He could be training with Piccolo or Vegeta, and they are both amazed and a bit envious of his ability. Gohan then uses his Ultra Instinct to help them understand new ways of fighting and power - up techniques. This would strengthen their bonds as comrades and also make them more formidable as a team in future battles.
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.
One common theme is Gohan's growth. Fanfictions often explore how he becomes stronger, both physically and mentally. For example, he might overcome his insecurities or develop new powers.
It can add new perspectives to the characters of Gohan and Videl. Fanfiction often explores different sides of well - known characters, and this could give fans a fresh look at their relationship and individual personalities.
In a crossover with the Avengers, Iron Man could be an ally. His high - tech gadgets combined with Gohan's power would be a great team. Also in the Pokémon world, Ash could be an ally. Ash's knowledge of Pokémon and Gohan's combat skills could be useful. In the Bleach universe, Ichigo could be a strong ally for Gohan, with their combined sword - fighting and energy - blasting abilities.