This has been an issue for some time, and it's only gotten worse with the release of Episode 12. If Goku and Vegeta can still use Super Saiyan 3 in Dragon Ball DAIMA, the series' premise is ...

Here's how the finale of Dragon Ball Daima explains why Goku never uses Super Saiyan 4 in the follow-up series, Super.

Goku's Great Ape Form Turns Him Into An Aggressive Animal Anime Debut: Dragon Ball, Episode 12, "A Wish To The Eternal ... such as Goku's Spirit Bomb Super Saiyan form. Dragon Ball Z: Lord Slug ...