@Dj Gopher, sorry, I can't quite remember. There was a question mark icon I noticed on my map and I believe it was in one of the long corridors in that area. He was in front of a small house in a bright area. Sorry I can't be more help. If the map is revealed and there's no question mark, maybe there's a way you have to trigger him.
@SiamJai, whoops. Thanks for the help though. Hope I can work out the Disorder a bit better. Now to figure out what to use my triangles, puzzle pieces, and spheres for.