How to Change Nintendo Account Gender
Steps for updating the gender setting for a Nintendo Account.
What to do
Go to the Nintendo Account website and sign in to your Nintendo Account.
When signed in, you can update your gender, or, if you are the admin in a family group, you can update the gender for any supervised accounts in the family group.
Select User Information.
In the “Profile” section, select Change.
In the “Gender” dropdown, select the desired gender.
Select Save changes to confirm the change.
Select Family Group.
Select the supervised account with the gender you wish to change.
Select User Information.
In the “Profile” section, select Change.
In the “Gender” dropdown, select the desired gender.
Select Save changes to confirm the change.