The symbol in Dragonball is called the "Kanji" symbol, and it represents the Turtle School, a martial arts school founded by Master Roshi. The symbol is often seen on the uniforms of characters who have trained under Master Roshi, such as Goku and Krillin. It is a symbol of strength, discipline, and the teachings of the Turtle School martial arts. **

Dragonball, Dragonball Z, and Dragonball GT are all part of the same anime series, but they have some key differences. Dragonball is the original series and follows the adventures of a young boy named Goku as he trains in martial arts and goes on a quest to find the Dragon Balls. Dragonball Z is the sequel series and focuses on Goku as an adult, as well as his friends and family, as they defend the Earth from powerful enemies. Dragonball GT is a continuation of the story but is not based on the original manga. It follows Goku as a child again and introduces new villains and storylines. Overall, the series differ in terms of tone, storylines, and character development. **

Dragonball Super is the continuation of Dragonball Z, while Dragonball GT is considered a side story and is not considered part of the main continuity of the Dragonball series. Dragonball Super follows the events of Dragonball Z and continues the story of Goku and his friends as they face new challenges and enemies. It is considered the official sequel to Dragonball Z and is part of the main storyline created by the original creator, Akira Toriyama. **

Dragonball GT is an anime series that follows the adventures of Goku as he embarks on a journey across the universe to retrieve the Black Star Dragon Balls and prevent the destruction of Earth. Dragonball Super is a sequel to the original Dragonball Z series, continuing the story of Goku and his friends as they face new powerful enemies and challenges. Both series are part of the Dragonball franchise created by Akira Toriyama and are popular among fans of the shonen genre. **

The symbol in Dragonball is known as the "Kanji" symbol, which is a Japanese character used in writing. In the context of Dragonball, the symbol represents the Turtle School, a martial arts school founded by Master Roshi. The symbol is often worn by characters who have trained under Master Roshi or have been influenced by the teachings of the Turtle School. It signifies strength, discipline, and the pursuit of martial arts mastery. **

Dragonball Super is considered the official successor to Dragonball Z Kai. Dragonball GT is not considered part of the official continuity of the Dragonball series, as it was not based on the original manga by Akira Toriyama. Dragonball Super, on the other hand, is a direct continuation of the story from Dragonball Z and is considered the true successor to the series. **

Dragon Ball is the original series that follows the adventures of a young boy named Goku as he trains in martial arts and goes on various adventures to collect the seven Dragon Balls. Dragon Ball Z is the sequel series that continues the story, focusing on Goku's adult life and his battles against powerful enemies, including aliens and other powerful warriors. Dragon Ball Z also introduces the concept of super Saiyan transformations and features more intense and epic battles compared to the original series. **

It ultimately depends on your preferences. Dragonball Z is the original series with the original voice acting and music, while Dragonball Z Kai is a remastered version with updated animation, re-recorded dialogue, and a faster pace. If you prefer the classic experience with the original voice acting and music, then Dragonball Z may be the better choice for you. However, if you prefer a more streamlined and modernized version with updated animation and pacing, then Dragonball Z Kai may be the better option. **