Alter Aeon Online Help

Keywords are:  'gender male female neuter sex'

Your character may be male, female, or neuter.  Potions are available in
the magic shop to change your sex, if you like.

It is fairly easy to change gender here, at this time.  There is no penalty
for being of a particular gender, and to be honest, all three genders are
treated exactly equally concerning stats, spells, leveling, etc.

If you want to change gender, you can buy a sex-change potion from the
magic shop in Ralnoth, on the Alter Aeon mainland.