Granknight is the low power enemies seen only one time in the Ghouls Guantlet. It has a "parry attack" it can reflect your magic shots. The only way to damage him is by striking his head twice.

Granknight Maximus

The king of the Granknights. He was engraved in stone 1000 years ago, now Sam has accidentally awakened him from his slumber. By stepping on the weak stone, Sam has freed him and is ready for his ruling.