Efthymios' participation in "What's normal for the spider is chaos for the fly" group surrealistic, odd and symbolic artworks' exhibition organized by ArtZone42 Gallery is provided below. The exhibition aims to promote the insightful mind of the artists, which seems strange to the common human being. Artists use codes and symbols to communicate and express their personal view of reality. Their surreal look and view of the world is revealed only through riddles.

Efthymios' participation in ENERGY Athens 2023 exhibition is provided below. The exhibition aims to bring together different opinions and trends of our time. To combine different techniques and also compose a single image of today's art. To convey the "energy" of our time to all visitors, through the artistic vision of the participating artists.