"Einstein" pulls Crichton into a desolate snowy environment; to better interact with him, he has also taken human form, and dresses in a black suit. His human appearance is only offset by his black eyes. The Ancient interrogates Crichton about his wormhole knowledge, and considers whether he poses a danger and must be eliminated. Einstein ultimately decides Crichton can continue to exist, and teaches him how to control where the wormholes take him.
Einstein re-appears in Farscape: The Peacekeeper Wars, when Crichton brings Stahleek to him, to demonstrate that a wormhole weapon is impossible, Einstein holds the emperor at bay; displeased with the situation, he decides to finally remove the wormhole knowledge from Crichton's mind, much to the latter's relief.