Worst Character in a Great JRPG?

[Alic0004]

Tidus

 

*edit*

and Kuja.

 

*edit*

No wait, the worst of all:

The princess from Grandia III.  Alfeena.  Though it might not have qualified as a great game even if you got to murder her halfway through.  (It definitely wasn't a great game with her taking the leading role.)