Name:3D 
age : appears 17
look
 http://th09.deviantart.net/fs70/200H/i/2014/078/e/c/3d_by_skiretehfox-d7asa53.jpg:
From :RWBY Escape from Beacon (Tumblr game)
species : Entity
abilities : Strength

skills: Summons spikes all over her body at times and her hands turn into spikes as well 

weapons/tools:None personally but she has Yang's gauntlets she never uses

other: 3D is Yang's entity or a entity that has possessed Yang and is keeping her hostage for reasons. Unlike other entitys she is benign and harmless it seems...