Well, a cool concept in 'pokemon dbz fanfic' is the potential for new hybrid forms. Maybe a Pokemon that has some Saiyan - like abilities, like increased strength during a full moon (similar to Saiyans getting stronger during a full moon in DBZ). Also, the idea of Pokeballs being used in a DBZ - style fight. Instead of just catching Pokemon, they could be used as a weapon or a tool to temporarily disable an opponent. And then there's the concept of the different types of Pokemon energy being compared to ki energy in DBZ. Fire - type Pokemon energy could be seen as a similar concept to a fire - based ki attack.
In these fanfics, Ash Ketchum is an obvious popular choice. He has a large fan base from Pokemon already, and when he's put into the DBZ universe or has DBZ - related adventures, it attracts a lot of attention. Another popular character is Bulma from DBZ. Her intelligence and her role in creating new technologies can be really interesting when combined with the Pokemon world. She could potentially create new Pokeballs or devices to help trainers. And finally, Charizard from Pokemon. Its fierce nature and its powerful fire - based attacks can make for some exciting crossovers with DBZ characters like Nappa or Raditz.
A popular 'Pokemon DBZ Crossover Fanfiction' is 'Vegeta's Pokemon Adventure'. Here, Vegeta lands in the Pokemon world and decides to take on the Pokemon League. His pride and combat skills make for an exciting read as he battles trainers. 'DBZ Warriors in the Pokemon Realm' is also good. It shows how the Z - fighters interact with Pokemon, from trying to understand the concept of Pokemon battles to using their own ki - based powers in unique ways during Pokemon battles.
Well, in DBZ fanfic, 'Hypno' could potentially be a made - up power or ability. Maybe it's a new form of energy manipulation that a character discovers. It could also be related to mind - control, like how some villains in DBZ already have the ability to influence others' minds, but this 'Hypno' thing might be a different take on it. For example, it could be used to make characters do things they wouldn't normally do, which would create all sorts of interesting plot twists and character developments in the fanfic.
In some 'Pokemon DBZ Crossover Fanfiction', the idea of fusion is really creative. Instead of just fusing DBZ characters like in the original DBZ, they fuse Pokemon with DBZ characters. So you might have Goku fused with a Charizard, creating a being with both Goku's combat skills and Charizard's fire - breathing and flying abilities. Also, the idea of using Ki attacks in Pokemon battles is interesting. It adds a whole new dimension to the battles, like a Pikachu using a Kamehameha - like electric attack.
Goku is often a very popular character in these fanfictions. His powerful and positive - minded nature makes him a great fit for interacting with the Pokemon world. Pikachu is also quite popular as it's the face of Pokemon, and seeing it interact with DBZ characters is always fun. Another popular one is Vegeta. His prideful and strong - willed personality can create some really interesting scenarios when combined with the Pokemon world, like him trying to train a Growlithe to be as strong as him.
One interesting concept could be the fusion of Pokemon powers with the energy - based attacks in DBZ. For example, Pikachu might be able to use its electric attacks in a way similar to Goku's Kamehameha, but with an electric twist. Another concept could be the Pokemon trainers having to face off against DBZ villains, and they'd have to strategize using their Pokemon in a completely different battle environment. Also, the idea of Pokemon evolving in a way that's influenced by the ki energy from DBZ, like evolving into a more powerful form when exposed to a certain level of ki.
A fanfic could focus on Female Trunks' relationships. Maybe she has a special friendship with Bulma that is different from the original male Trunks' relationship with his mother. She could also have romantic interests that are shaped by her being a Saiyan and her place in the DBZ universe. It could explore how she balances her Saiyan warrior side with her more emotional and relationship - oriented side.
One idea could be a story about Cabba training Caulifla in a new technique. Cabba, being more experienced in some aspects, could show Caulifla the ropes. They could face various challenges during the training, like dealing with unexpected power surges or difficult terrains.
One great 'oc dbz fanfic' is 'The Saiyan's New Hope'. It has an interesting original character who gets thrown into the Dragon Ball Z universe and has to navigate the complex power dynamics and politics. The story is full of action and the author does a good job of keeping the character's growth believable within the context of the DBZ world.