There are a number of individual portfolios within his work. Each one following a different title and theme. As I looked through them what struck me most was the difference in each portfolio. Some of the images were disturbing to me. A mix of natural and unnatural things or a blending of creatures that sat uneasily with me. Other portfolios were images that reminded me of childhood. Light images that were playful and colourful. Images I could see sitting beside Paul Frank items or hanging on the walls of a children's room.
With that said I encourage you to take a look for yourself and see how the images effect you. http://ruisousaartworks.blogspot.com/
