The Gelflings are a race of small, elf-like beings from the planet Thra. They are able to share memories by holding hands, which can happen involuntarily. Females of this species have retractable wings which allow them to glide over short distances.
Almost all Gelflings were killed out by the Skeksis, who feared a prophecy that stated that a Gelfling would destroy them during the Great Conjunction (the alignment of the three suns which happens once every thousand years). Only two known Gelflings survived: Jen, who was raised by the Mystics; and Kira, who was raised by Podlings. The life essence of a Gelfling is known to have long-term rejuvenating properties, at least for the Skeksis.