The Keeper

The Keeper was an alien being who travelled about the universe collecting zoological specimens from every planet he visited. He was most interested in specimens that had some puzzling or unique characteristic. Although not truly malevolent, he did not regard capturing sentient lifeforms as evil. He was quite aware that Penny and Will Robinson would make better specimens than their elders simply because they would not feel the deprivation of freedom as strongly. He used an electronic staff to summon and to control the creatures he desired to collect. Besides the children, Dr. Smith was also susceptible to the power of the staff.