The Welsh version of the English puck. His actions and character are so like those of Shakespeare's Puck that some Welsh people have claimed that Shakespeare borrowed him from stories told him by his friend Richard Price of Brecon who lived near Cwm Pwca, one of the Pwca's favourite haunts.

Sikes in British Goblins reproduces a rather pleasing drawing of the Pwca, done with a piece of coal by a Welsh peasant. The Pwca in this picture has a head rather like a fledgeling bird's and a figure not unlike a tadpole's. No arms are shown, but the figure is in silhouette.

One story about the Pwca shows that a tribute of milk was left for him. This may possibly have been in payment for his services as a cowherd, though that is not expressly mentioned. A milkmaid at Trwyn Farm near Abergwyddon used to leave a bowl of milk and a piece of white bread for Pwca in a lonely place on the pastures every day. One day, out of mischief, she drank the milk herself and ate most of the bread, so that Pwca only got cold water and a crust that day. Next day, as she went near the place, she was suddenly seized by very sharp but invisible hands and given a sound whipping, while the Pwca warned her that if she did that again she would get worse treatment.

Pwca is best known, however, as a Will o' the Wisp. He will lead a benighted wanderer up a narrow path to the edge of a ravine, then leap over it, laughing loudly, blow out his candle, and leave the poor traveller to grope his way back as best he can. In this behaviour he is like the Scottish Shellycoat as well as the English Puck.

[Motif: F402.1.1]