Blue Knight

The Blue Knight is a character from The Legend of Zelda: Four Swords Adventures. A blue-armored Knight of Hyrule, he guards the Blue Jewel. At one point, the Blue Knight was sucked into the Dark World and morphed into a Big Stalfos.

Link encounters the Big Stalfos in The Field. After destroying the Knight Mark, perpetuating the curse, the Blue Knight returns to normal. He explains to Link about the four Royal Jewels and how they are needed to enter the Tower of Winds. The Blue Knight than gives Link the Blue Jewel and states "I place in your hands the hopes of all Hyrule!"