Justin D'Souza she also gets outclassed by magic build khimari due to his magic plus 20 percent spear at djose given by someone you talk to and is the worst in post game due to celestial weapons only piercing physical defense not magic Defense.
You can use dark attack or dark buster to blind defender x. though i don't think blindness protects very well from the thrust punch. It's best to use protect and cheer a lot, or focus if you try and take him out with magic.