Then she was ushered inside by Hiram's robot servants.

He absently admired the new, modified robot servant, designed to meet his current needs.

The Key has several robot servants that he uses to perform tasks for him.

"No one said anything about any robot servants," he said.

Watching benignly at every step, she was always ready to order her robot servants to help.

On the other hand, there is something appealing about having a robot servant.

Where are the robot servants we were promised?

To a pair of robot servants he said, "Have my valet de chambre remind me."

My personal robot servant stood in the opening, eager and alert.

The robot servant rolled in with a fresh pot of tea and a cup for the young man.