Everything was made from cardboard, wood strips, and putty / clay. It is possible to use foamboard as well, but I didn't do so in this case. Plus several household items were added here and there, while acrylic hand-paints and spray-paints were used.
I've added two Valaverse Action Force Figures in the pics to help you grasp the scale; and some images are presented with a blue-light filter, while others have the standard white light. Also, there are two tablets set on the leftward wall, with small blue screens. They are held by magnets, and they are removable.
Will a Third Wall be added? I dunno, we'll see how it goes in the future ;)
Part 1 of this series, showing the behind-the-scenes and the prelim layout work is over HERE