The orderlies were grill-mouthed humanoids who served the Shakri. They were directly controlled by their android agent (which was posing as a little girl in the hospital, holding a cube). They abducted hospital patients and took them to the Shakri ship. Among the captured humans were Rory Williams and Brian Williams. They were presumably destroyed when the Shakri ship exploded. (TV: The Power of Three)
Behind the scenes
The orderlies were played by David Beck and Daniel Beck.