To develop Goku Jr's character further, he could be given more complex emotions. For example, showing his fear in the face of truly overwhelming enemies, rather than always being fearless like Goku. This would make him more relatable. Also, exploring his relationships in more depth, like his friendship with Pan. Maybe they have a falling out over different views on how to protect their world, which forces Goku Jr. to grow and understand different perspectives.
A plot idea could be that Goku Jr. discovers a mysterious artifact that has a connection to the Dragon Balls. As he tries to figure out its purpose, he gets caught up in a race against an evil group who also wants the artifact for their own malicious plans. This could lead to him making new allies and having to use his wits as well as his strength. He might also have to face some personal challenges, like doubting his own worthiness to be a hero, similar to how Goku in the original series sometimes had self - doubts.
Another potential rival could be a young, prodigious martial artist from a new school of martial arts on Earth. This character could be jealous of Goku Jr's fame and constantly try to outdo him in battles and in the eyes of the public. He might use unorthodox techniques that Goku Jr has to quickly figure out how to counter.
There were many different comics after Dragon Ball GT. Some of the famous works included:
1 Dragon Ball Super: This is a manga created by Japanese manga artist Akira Toriyama, a follow-up work of Dragon Ball GT. It was broadcasted in Japan in 2017 and received a wide audience and good reviews worldwide.
2 One Piece: This is a manga created by the Japanese manga artist, Oda Eichiro, and is also part of the Dragon Ball series. It was first published in 2007 and had been developed and updated over the years.
3. The Giant of Attack: This was a manga created by the Japanese manga artist, Shokuyama, and was also part of the Dragon Ball series. It was first published in 2011 and is still in the works.
4. The Blade of the Destroyer: This is a manga created by the Japanese manga artist Tanjiro and a follow-up work of the Blade of the Destroyer. It was broadcasted in Japan in 2019 and received a wide audience and good reviews worldwide.
5. Sword Art Online: This is a manga created by the Japanese manga artist Kirito and a follow-up work of Sword Art Online. It was first published in 2009 and is still in the works.
These works were all important works in the Dragon Ball series. They were different in terms of storyline, character image and artistic style, but they were all loved by the readers.
In the ending of Dragon Ball GT, Goku transforms into a Super Saiyan 4 and defeats Omega Shenron. Then he leaves with Shenron, and it's a rather bittersweet ending as he disappears from the lives of his friends and family on Earth, but his legacy lives on. It's a very emotional conclusion to the series.
Dragon Ball GT doesn't have a corresponding manga. The story was developed specifically for the anime series. It's not based on a pre-existing manga like the original Dragon Ball and Dragon Ball Z.
Dragon Ball GT has a manga, but it's not considered as canonical as the main Dragon Ball and Dragon Ball Z manga series. It was created based on the anime rather than the other way around.
Dragon Ball Gran Turismo was one of the Dragon Ball series that was released in Japan in 2006. Although it didn't receive high reviews, it was still an important part of the Dragon Ball series.
At present, we have yet to receive official confirmation on whether there will be a sequel to Dragon Ball GT. Although some media and individuals claimed to have plans for a sequel, these news were not officially confirmed. Therefore, it is currently uncertain whether there will be a sequel to Dragon Ball GT.
One idea could be Goku Jr facing a new, powerful enemy that has a unique power related to time manipulation. This would force him to train in ways he never has before and seek help from unexpected allies, like some of the older, wiser characters from the original Dragon Ball Z series.