Red Cap

Red Caps originated in Scotland and are kind of like the Jason Voorhees of the faerie realm, he gets his name because of his red cap, which is red because he soaks it in the blood of his victims. Redcap is “a short, thickset old man with long prominent teeth, skinny fingers armed with talons like eagles, large eyes of a fiery red color, grisly hair streaming down his shoulders, iron boots, a pikestaff in his left hand, and a red cap on his head”

Red cap mainly stays in ruined old castles near the Anglo-Scottish border. When travelers take go into in his lair he will throw huge stones at them, and if he kills them he will soak his cap in their blood, giving it a red hue.

He may be driven away by repeating words of a bible or holding up a cross. He will utter a sad, defeated yell and vanish with flames, leaving a large tooth on the spot where he just was.

the redcap has plenty of stories as well, like the story of “robin redcap”
“The redcap familiar of Lord William Desoulis called Robin Redcap , is said to have wrought much harm and ruin in the lands of his master’s dwelling, hermitage castle. Ultimately, William was (according to legend) taken to the Ninestane rig, a stone circle near the castle, then wrapped in lead and boiled to death. In reality, William DeSoulis was imprisoned in Dumbarton castle and died there, following his confessed complicity in the conspiracy against Robert The Bruce in 1320.