Guest star Peter Weller plays a scientist who has implanted mechanical and electrical devices in his body that give him special abilities - the dictionary definition of a "cyborg." Weller is most famous for playing the lead role in the RoboCop movies, in which his character is a cyborg police officer.
20 minutes into White Tulip S02E18, a small sea horse can be seen in the bathroom cabinet of the former NASA-employee. Sea horses appear all through the series and also in-between cuts sometimes in full screen. As revealed in "The Bishop Revival" (S02 E14), the sea horse was a signature used by Dr. Walter Bishop's father in his scientific experiments.