I think absolutely no other human in the photo.
99% of the photos selected seems to be the cosplayer alone in the photo while for the 1 I see that have 2 people in the photo, the other is a robot at the back.
2016 COSTUMES PLANNED
50 Attack on Titan
a few (Saint Seiya) Episode G: Assassin
and a Brand New Star Wars
Biker Scout Armor!