Lukáš Opekar (b. 1983) is a Czech graphic artist based in Prague who combines photography, machine learning, generative art, drawing, hand-printed graphics and cyanotypes. A graduate of the Faculty of Art and Design at Jan Evangelista Purkyně University in Ústí nad Labem, he explores the limits of photography through computer vision, using random processes to uncover worlds hidden behind commonly perceived reality. His GAN-assisted works, including the black-and-white "Characters" series minted on SuperRare under the handle hoxgen, were among the early wave of neural-network art on Ethereum; in 2025 he was nominated by Fotograf.zone for the European FUTURES Talents photography programme.