

Broly is shown to have a tail as a baby.

![Broly as a baby](https://i.stack.imgur.com/ho57v.jpg)

But the tail is not there when he is an adult or kid, which means that he has
the potential to become Super Saiyan 4. The only time he has a tail is when he
was cloned, as shown in _Bio-Broly_. The time span in which Broly does not
have a tail is: _Broly — The Legendary Super Saiyan_ and _Broly — Second
Coming_.

Do we know if Broly was able to transform into Super Saiyan 4 in _Dragon Ball
Z_?

The only time he turned to Super Saiyan 4 is in _Dragon Ball Heroes_ , which
is a game and not canon.


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dragon-ball-z dragon-ball-series dragon-ball-gt
Was Broly able to transform into Super Saiyan 4 in Dragon Ball Z?


No, Super Saiyan 4 was never a canon - all of the Dragon Ball GT episodes are
filler and Akira Toriyama, the manga author, had never made SSJ4 and the next
official transformation or rather power up is "Super Saiyan God" - achievable
by 5? (I don't remember) Saiyan powering up one Saiyan.


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Broly wasn't a canon character and Super Saiyan 4 isn't a canon
transformation, so the idea of Broly being a canon Super Saiyan 4 is kind of
madness.

Broly is a character from the movies, in which there is no hint that he or
anyone else can become a Super Saiyan 4, and SS4 is from GT and there was no
mention of Broly in GT. If he went SS4 in some game, then in the canon of that
game he is able to, but otherwise I would say no, there is no reason to think
Broly could be a SS4, as even his normal Super Saiyan form is in fact pretty
weird and not particularly similar to the main characters' Super Saiyan
transformations.


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No Broly was not able to transform into Super Saiyan 4 in Dragon Ball Z.
Actually no character was able to achieve Super Saiyan 4 in Dragon Ball Z as
Super Saiyan 4 was introduced in Dragon Ball GT.

I will not go into details of what is canon and what is filler as the other
answers have explained it well.

However, Broly had a Legendary Super Saiyan form - the only Super Saiyan
transformation that Goku has not been able to achieve in the series, canon or
otherwise. How strong the Legendary form is in comparison to Super Saiyan,
Super Saiyan 2 etc. is open to interpretation. Still one can say quite surely
say that Legendary Super Saiyan form was considerably weaker than Super Saiyan
4.

So, no Broly never achieved Super Saiyan 4 and he never got as strong as Super
Saiyan 4 either.


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No because there is no Super Saiyan 4 it is not canon to DBZ however in DBGT
Vegeta turned into SSJ4 with the help of a machine build by his wife Bulma so
possible that he can since his a saiyan only based on a series GT not DBZ.


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