Alberich is actually Sugou Nobuyuki, Fairy King Oberon and Yuuki Asuna ex fiancee and the former chief of the research institute of RECT Inc.
In other word he’s the bad guy in SAO who’s behind the mind experiment project.
The character Alberich appear in Sword Art Online Hollow Fragments and Infinity Moment , a game for PS Vita and PS4.
His appearance in anime as Fairy King Oberon and as Alberich is about the same facial look so I’m not sure why no one realizes it’s the same person in the game.
This is an easy paper craft, his parts is not hard to assemble except for the left hand. Other than that it’s a fairly easy crafts for adults.
Model unfolded by me.