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.
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.
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.
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.
My knowledge is limited to the year 2021, and I am unable to provide the latest information on the Wasteland Era. However, according to what I know, the power classification system in the Wasteland Era is quite complicated. Different authors and readers might have different understandings and classifications. Generally speaking, in the Desolation Era, strength could be divided according to different standards, such as strength, wealth, power, wisdom, ability, and so on. At the same time, there were many powerful races and forces in the Desolation Era. These races and forces might divide their strength according to their characteristics and advantages. Therefore, the division of strength in the Wasteland Era was a subjective issue. The specific division depended on the reader's understanding and opinion.
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.
In the light novel, Bell Cranel has reached Level 4. His growth has been quite remarkable throughout the story. He has faced numerous challenges and battles which have contributed to his leveling up. His level progression is an important aspect of the overall plot as it reflects his development as an adventurer and his increasing strength in the world of the story.
Martial Yin Yang's current level setting was not clear, but according to the novel Martial Yin Yang, different martial artists could be divided into levels according to different factors such as strength, experience, skills, and so on. Among them, martial artists could be divided into the following levels:
1 Martial Artist
2 Martial Masters
3 Martial Apprentice
4 Martial Artist
Martial Arts Academy Disciple
6 Martial Artists
7 Great Martial Masters
8 Wu Zong
9 Wu Zun
Martial Saint
Martial God
Little Marten's peak level was not too clear but according to the novel 'Battle Through the Heavens' setting, Little Marten's peak strength could allow him to enter the Heavenly Silkworm Cave and become the master of the Heavenly Silkworm Cave.
In the 'goku is op and godlike as a baby fanfiction', Goku's power as a baby could be demonstrated in various ways. His senses could be highly developed, allowing him to detect danger or the presence of strong opponents from afar. He may also possess an inherent understanding of combat strategy, despite his young age. This could be due to some sort of genetic or mystical influence. Additionally, his physical abilities such as speed and agility could be far beyond what is normal for a baby. He could move with incredible swiftness and precision, almost like a miniature martial arts master, which is a clear sign of his over - powered and godlike nature.
In some fanfictions, Goku Black has been depicted as having a hidden power reserve. In the Tournament of Power, he could tap into this reserve and achieve a new level of transformation. This new form would give him increased speed, strength, and energy projection. He might use this form to take on multiple strong opponents at once, like the powerful warriors from Universe 7 or other universes. His attacks could become more unpredictable, such as his energy beams changing direction mid - flight to catch his foes off - guard.