The Green Knight from the story Sir Gawain and the Green Knight.
"Now I will say no more of the service, but that ye may know there was no lack, for there drew near a venture that the folk might well have left their labour to gaze upon. As the sound of the music ceased, and the first course had been fitly served, there came in at the hall door one terrible to behold, of stature greater than any on earth; from neck to loin so strong and thickly made, and with limbs so long and so great that he seemed even as a giant. And yet he was but a man, only the mightiest that might mount a steed; broad of chest and shoulders and slender of waist, and all his features of like fashion; but men marvelled much at his colour, for he rode even as a knight, yet was green all over. For he was clad all in green, with a straight coat, and a mantle above; all decked and lined with fur was the cloth and the hood that was thrown back from his locks and lay on his shoulders. Hose had he of the same green, and spurs of bright gold with silken fastenings richly worked; and all his vesture was verily green. Around his waist and his saddle were bands with fair stones set upon silken work, 'twere too long to tell of all the trifles that were embroidered thereon--birds and insects in gay gauds of green and gold. All the trappings of his steed were of metal of like enamel, even the stirrups that he stood in stained of the same, and stirrups and saddle-bow alike gleamed and shone with green stones. Even the steed on which he rode was of the same hue, a green horse, great and strong, and hard to hold, with broidered bridle, meet for the rider. The knight was thus gaily dressed in green, his hair falling around his shoulders; on his breast hung a beard, as thick and green as a bush, and the beard and the hair of his head were clipped all round above his elbows. The lower part of his sleeves were fastened with clasps in the same wise as a king's mantle. The horse's mane was crisp and plaited with many a knot folded in with gold thread about the fair green, here a twist of the hair, here another of gold. The tail was twined in like manner, and both were bound about with a band of bright green set with many a precious stone; then they were tied aloft in a cunning knot, whereon rang many bells of burnished gold. Such a steed might no other ride, nor had such ever been looked upon in that hall ere that time; and all who saw that knight spake and said that a man might scarce abide his stroke. The knight bore no helm nor hauberk, neither gorget nor breast-plate, neither shaft nor buckler to smite nor to shield, but in one hand he had a holly-bough, that is greenest when the groves are bare, and in his other an axe, huge and uncomely, a cruel weapon in fashion, if one would picture it. The head was an ell-yard long, the metal all of green steel and gold, the blade burnished bright, with a broad edge, as well shapen to shear as a sharp razor. The steel was set into a strong staff, all bound round with iron, even to the end, and engraved with green in cunning work. A lace was twined about it, that looped at the head, and all adown the handle it was clasped with tassels on buttons of bright green richly broidered."