User blog comment:SpiderRolling/Reference Rooms/@comment-3332136-20130511180812/@comment-3332136-20130513022323

2A: Madotsuki herself.

4A: Mewn's protagonist

10A: Divinity Fatum's protagonist

11A: Hattermet (Somnium)

6B: Black Aya (Hallucigenia)

3B: Nakitsuki (Mugamuchu/Our Crazy Dream)

12B: Ignore it, It's transparent.

10C: M∞N's protagonist

11C/9F:I forgot. Probably SINGLE LINE's protagonist and Yume's Nitrioku's Protagonist.

1D: Utsutsuki (Dream Trance)

5D: Vis/Visi/Vice (Fleshchild)

11D: W.T (Somnium)

4E: Natalie (Dreamscaper)

9E: Dream Genie's protagonist.

6F: Sadatsuki (DayDream)

3G: Iwakutsuki (Parade)

7G: Aitsuki (Kind heart)

12C and D: They're fractals.

10D: Ignore it.

12A: Misc. Picture, possibly detailing the outside of the Museum (Next area, in fact.)

The last 12 are Robot Masters from the Megaman series.