Their home world is in Epsilon Indi of the constellation Indus. Slightly smaller than average Terran humans, they have a very peculiar face with a complex bone structure that makes believe they wear a sort of a mask, although it is their natural features. Jefok are a peaceful race, known for their abilities in diplomacy as well as their knowledge in engineering. They have being visiting Terra since around 3 500(T) years ago, always coming in peace and moved by curiosity, but also drawn to help Terrans avoiding terrible mistakes to be made, in their choices for their future.
They met with different world leaders and your famous JFE in particular. In 1965, they delivered a warning message to all governments with nuclear capabilities.