This Saint Seiya papercraft is the Pegasus Seiya, created by Crisis Craft. There are another Pegasus Seiya paper model on the site: Saint Seiya – Pegasus Seiya Free Papercraft Download [by Laul]. And There is the Helmet Of The Pegasus Seiya here: Saint Seiya – The Helmet Of The Pegasus Seiya Free Paper Craft Download [by Juke].
Pegasus Seiya is the main character of the series. He is one of the 88 saints of Athena, and one of the 48 Bronze Saints. He is protected by the Pegasus Constellation so he wears the Pegasus Cloth. He is Tenma's reincarnation.
You can download this new version Saint Seiya Pegasus Seiya paper craft from here: Saint Seiya - Pegasus Seiya New Version Free Papercraft Download