As explained through various interviews and advertising details from the producer of Dragon Ball, Akio Iyoku, the connection between Daima and Dragon Ball GT is entirely intentional. The production team aims to create something that older fans can enjoy alongside their children. It will feel both familiar and new, which is why it’s not entirely surprising to see a new version of Super Saiyan 4 Goku make an appearance.
However, what’s particularly intriguing is that this new transformation of Goku in Daima has some significant differences compared to GT.

Goku’s Super Saiyan 4 Transformation in Dragon Ball Daima
Dragon Ball Daima chapter 18 has introduced Goku’s Super Saiyan 4 transformation, which has some distinct differences compared to the version seen in Dragon Ball GT in several key aspects.
This form does not appear in an official segment due to the supervision of creator Akira Toriyama, and it manifests in a different way. Instead of Super Saiyan 4 being activated by a new energy discovery from Bulma, Goku in Daima undergoes this transformation through a magical technique from a Namekian character, Neva. Therefore, we must acknowledge that the Super Saiyan 4 transformation in these two different films is quite dissimilar.
The Super Saiyan 4 version in Daima not only keeps Goku in a more refined state (instead of evolving into a giant ape as in Dragon Ball GT), but also alters his clothing in a way that fits this new form. Notably, it is more clearly explained through the magical utilization of Neva. Just like Piccolo, Neva also possesses magic to create attire for anyone, and he has tailored Goku’s appearance to suit this new state.

What’s New in Super Saiyan 4 in Dragon Ball Daima?
Although Goku’s Super Saiyan 4 form in Daima looks quite similar to that in Dragon Ball GT, there are also some significant differences beyond the visual aspects. The most notable difference is that Goku’s hair color in Daima is a dark red, while it was black in GT. This color is more compatible with the red hair Goku has when utilizing Super Saiyan God, and it even has a slight fiery glow when he transforms into this new form. This signifies that there are more changes to explore between the two forms.

Because Neva’s magical essence is the key to this transformation, it also places Super Saiyan 4 in a very unique context within the official timeline of Dragon Ball. It has never been utilized in Dragon Ball Super and may never be used again outside of the Demon Realm (since there is no assistance from Neva). Therefore, fans are eagerly awaiting to see how Super Saiyan 4 might continue to develop in the future of the anime.