Jessica (The Merchant Of Venice)
Portia (The Merchant Of Venice)
Quince (A Midsummer Night's Dream)
Shylock (The Merchant of Venice)
Titania (A Midsummer Night's Dream)
Urswick, Christopher (Richard III)
The Witches in the Scottish play
(hint: there are no X or Z characters)
Someone is called 'Thou whoreson Z' in one of the histories, but I have no concordance to hand in this beachside Internet cafe!
Young Cato - Julius Ceasar
If there is no X or Z and we never no when Clary will be home.
Lets try opposites.
A - Z