Here is a video you asked for. The hidden secret of who shadow six is in another little nightmares 2 theory series. shadow six or also glitch six is an entity residing within six, watch the video to learn more.

IN THIS VIDEO

0:00 Intro
0:51 Six is not a normal child
3:31 The nature of the shadow
5:56 Six is alone now
9:10 Six was born with it
10:42 The shadow belongs to the lady