Grail Knight

From the Lego Indiana Jones Wiki

Grail Knight
"He chose...poorly."
Skill	Sword; Brotherhood access (Nintendo DS version only)

Grail Knight is a character in Lego Indiana Jones: The Original Adventures. He is the lone guardian and knight of the First Crusade who has kept watch over the Holy Grail for more than 700 years. He was kept alive all those years by the power of the Grail and hid the one true Grail among many false ones to confuse the unworthy from seeking its power.

[edit] In Lego Indiana Jones

In the Lego Indiana Jones: The Original Adventures game, you have to fight him while finding the true Holy Grail. When you fight the Grail Knight in the Temple of the Grail, he is not wearing his helmet, however if you play as him he is wearing his helmet. You can punch him 4 times and he becomes incapitated untill you choose a grail and place it in the middle of the room. He is a very good knight.