These are vintage Saint Seiya (Knights of the Zodiac) trading cards or stickers, likely from a 1980s or 1990s Japanese collection.

The collection features characters in their signature clothing or armour. While these are oftern referred to as sticker cards, there may be items in this lot that are categorized differently. This is not an area of expertise but I can tell you that these are from the 80/90s and quite rare.