Hasko appeared in the Farscape episode "Rhapsody in Blue". He is part of a group of Delvians, that wanted to train themselves so that they could use their powers as a weapon against the peacekeepers. His assignment in Thaleen's plan was to distract the remaining crew on Moya with hallucinations. When he and Lorana discovered that Thaleen had gone insane, he released the crew from the hallucinations, but warned them to go to the planet since such a move could mean that Zhaan died.