Have any Zoan types other than Chopper gained the ability to transform into more than three things?


Chopper can transform into 7 different things (not including monster point)
with the rumble ball and after the timeskip he can transform into 7 more. But
why are there no other Zoan types that have more than three transformations!




> Chopper can transform into 7 different things (not including monster point)
> **with the rumble ball**.

You answered your own question right there. He's completely reliant on a drug
that he developed in order to make the additional transformations. Before the
timeskip he was able to do the original 3 transformations without the rumble
ball, and an additional 4 with the rumble ball.

After the timeskip he no longer needs the rumble ball for all 7 original
transformations. There is nothing canon that explains why. However with the
fact that he is able to transform into Monster Point with only 1 rumble ball
now hints that he has developed a permanent effect of some degree that allows
this.

It is assumed at this point that Chopper _could_ theoretically develop
something for other Zoan-class users assuming the rumble ball didn't already
work for them. Suffice to say that at this point no other _known_ scientists
have developed anything similar.




> Chopper can transform into 7 different things (not including monster point)
> **with the rumble ball**.

You answered your own question right there. He's completely reliant on a drug
that he developed in order to make the additional transformations. Before the
timeskip he was able to do the original 3 transformations without the rumble
ball, and an additional 4 with the rumble ball.

After the timeskip he no longer needs the rumble ball for all 7 original
transformations. There is nothing canon that explains why. However with the
fact that he is able to transform into Monster Point with only 1 rumble ball
now hints that he has developed a permanent effect of some degree that allows
this.

It is assumed at this point that Chopper _could_ theoretically develop
something for other Zoan-class users assuming the rumble ball didn't already
work for them. Suffice to say that at this point no other _known_ scientists
have developed anything similar.

