After Goku turned into SSJ4 in Dragon Ball Daima, fans speculate that a condition featured in GT could explain why he doesn't do in Super.

Super Saiyan 4 Goku has Instant Transmissioned right out of Dragon Ball GT and into DAIMA Episode 18, but he underwent a few changes along the way.

Super Saiyan 4 is finally made canon in Dragon Ball DAIMA, but it has some notable differences from its GT version that could even impact Super.

SSJ4 transformation confirmed as canon in Dragon Ball Daima, sparking fan speculation. Goku reaches his limits and unlocks SSJ4 power without magic or tail in Episode 19.