I view Griffith as narcissistic and sociopathic. I don't think he cared about anything or anyone beside himself and his goal. He viewed Guts as his property and a tool rather than a friend, and Guts being able to defeat him is what destroyed him.
Say it could fit anywhere within the franchise, DB, Z, GT, S, follow the manga or anime or movie continuity. What would it be like? What would your villain be like, and their unique abilities? How does this villain get defeated?
I don't doubt this could be possible, but this seems to be your foregone conclusion, that these anime series are being plagiarised when there are simpler explanations. The Rocky story for example of an underdog boxer is quite generic and doesn't require plagiarism, even so, Gothic pointed to a...
Q: Would you like to cheat on her?
Toriyama: I’m not that brave. But if I knew I wouldn’t be found out, I’d like to try it just a little bit.
Q: Do you plan on having another child? How many children do you want?
Toriyama: No, one is fine. But I guess it’d be all right to have another one if...