Goku in the manga doesn't hit a power level of 8000. The power escalation in the story doesn't go that high for him. There are various factors and story arcs that determine his power growth, but 8000 isn't one of them.
Obviously, Goku is one of the main characters. Since it's about him being born with a high power level. And his parents might also be important characters as they would be related to his birth and the discovery of his high power level. Maybe there are also some Saiyan elders or trainers who play a role in his life as they would be interested in his power.
Goku's power is measured in different forms and levels in his universe. When it comes to Legendary Pokemon, some of them have the ability to control elements like time and space. In a fanfic, Goku in his Super Saiyan Blue form might be able to match the power of a Legendary Pokemon like Palkia, which has power over space. But it also depends on the situation. If Goku is in an environment where his Ki attacks are less effective, like in a dimension where psychic powers are dominant, he might have a harder time against a Legendary Pokemon like Lugia. Overall, it's a complex comparison as their powers are quite different in nature.
In the context of this fanfiction, his high - born power level would have a huge impact on his early days. He may grow up faster in terms of physical strength and combat skills. Since he's born with such power, he might not face the same challenges as other Saiyans in developing basic abilities. However, this could also lead to overconfidence. And perhaps he has to deal with the burden of high expectations from his community at a very young age. He might be constantly pushed to test his limits, which could be both a good and a bad thing for his development.
Well, Goku's power level progression could be different in that he might be more in control of it. Since the head injury had some impact on his psyche, without it, he could have a more calculated approach to increasing his power. He might not rely as much on the Kaioken technique, which was developed in part due to his need to overcome limitations caused by his injury - affected development. Instead, he could focus more on pure Saiyan power - up methods like the Great Ape transformation and evolving it further.
One common theme is the power struggle. In 'alien vs predator x reader fanfiction', there's often a fight for dominance between the aliens and predators, and the reader gets involved in some way. Also, the theme of adaptation is prevalent. The reader has to adapt to the harsh and strange environments created by these two species. For example, in many stories, the reader has to learn how to avoid the acidic blood of the aliens or the advanced hunting techniques of the predators. There's also the theme of friendship or alliance in some cases, where the reader forms an unlikely bond with either an alien or a predator against a common enemy.
In some fanfictions, they might explore different universes together. Goku is used to traveling between different realms, and Power Girl could be intrigued by the new places. They could have adventures and learn from each other's cultures and powers.
Alien Predator, Alien vs. Predator, how many are there? As of September 2015:
The Alien series had a total of five games, namely Alien, Alien 2, Alien 3, Alien 4: Contract, and Alien 5: Rebirth.
The Predator series consisted of four parts: Predator, Predator 2: Alien Awakening, Predator 3: Ancient Light, and Predator 4: Dark Warrior.
Alien vs. Predator was a movie released in 2002. It was a cross-plot between the Alien series and the Predator series.
One popular 'alien vs predator x reader fanfiction' is 'The Encounter'. It has an exciting plot where the reader character gets caught in the middle of a battle between the aliens and predators. Another great one could be 'Surviving the Hunt' which focuses on the reader's struggle to survive in their world.