Skeletal Guards

The are two skeleton found at the entrance of the Color Dungeon in the DX version of.

One of them is wearing a blue tunic and the other a red tunic. In order to enter the dungeon, Link must tell each skeleton what color they are wearing. If Link is in the midst of another game quest, they prevent him from entering the Color Dungeon.

Trivia
The Piratians from and  bear resemblance to the Skeletal Guards.