I took inspiration from a lot of inspiration for Goku Jr. The first is Goku (Kaka is meant to be like his father in many ways) and Goku Jr from Hero's Legacy. I then decided to use elements from a pretty bad OC I discarded Years ago. Clone and adopted son to be exact. I also decided that I wanted to not just have an original take on Goku Jr but also flesh him out as a character. I want to show more of his overall character, but that'll take time.

I also took partial inspiration from the Goku Clones. Admittedly, the dynamic between Goten and Goku Jr is inspired by Mario and Luigi from Mario. And some will Goku Jr's character is also inspired by the Belmonts from Castlevania as well.