When on a counter Earth, Peter Parker temporarily used his evil/good doppelganger's uniform. It was a look at the classic Spider-Man suit, red & blue, however with a modern twist. The Spider suit had web shooters built into the wrist bands/arms, and also featured a cape for mobility. This was used when Peter Parker's counterpart was badly wounded and needed Peter, Amazing Spider-Man, to fight crime in New York for a short time while Peter, the Amazing Spider, healed up. In the end, Peter Parker found out that his counterpart was actually draining the abilities of other Spider-Men and soon took the permanent role as the Amazing Spider.
The practice may have originated in a Celtic festival, held on 31 October–1 November, to mark the beginning of winter. It was called Samhain in Ireland, Scotland and the Isle of Man, and Calan Gaeaf in Wales, Cornwall and Brittany. The festival is believed to have pre-Christian roots. After the Christianization of Ireland in the 5th century, some of these customs may have been retained in the Christian observance of All Hallows' Eve in that region—which continued to be called Samhain/Calan Gaeaf—blending the traditions of their ancestors with Christian ones. It was seen as a liminal time, when the spirits or fairies (the Aos Sí), and the souls of the dead, could more easily come into our world. It was believed that the Aos Sí needed to be propitiated to ensure that the people and their livestock survived the winter.