Seiya, from manga/anime series "Saint Seiya". You can see the pictures I used for this photomanipulation below the final result.
This work is protected by fair use laws.
Credits:
Seiya Cosplay http://andybogard.deviantart.com
Saori/Athena Cosplay: http://aaliyahsmith91.deviantart.com
Milky Way picture: http://shonj.files.wordpress.com
Photomanipulation and Pegasus constellation: Me.