The dragons from Game of Thrones - Drogon, Rhaegal & Viscerion .
There is one dragon mesh in the file. To change its skin, select the body mesh, select 'skin' under materials tab, go to the textures tab and change the image file from 'Diffuse Drogon' to 'Diffuse Rhaegal' or 'Diffuse Viscerion'.
The dragon has a basic rig. Feel free to rig it properly :)