The final season includes two notable actors from Babylon 5 (1994), which ended its run about a year before 'Sliders (1995)'. The recurring character of Dr. Oberon Geiger is portrayed by Peter Jurasik, who was, under heavy makeup, Londo Mollari in B5. Then in 'Strangers and Comrades', Jerry Doyle portrays Sgt. Vernon Larson. Doyle, of course, was Security Chief Michael Garibaldi through most of the run of B5.