GELF
G.E.L.F. or GELF is an acronym for Genetically Engineered LifeForm. It was used in two science fiction television programs, originally appearing in the BBC's cult sitcom Red Dwarf, and later on in the U.S. drama seaQuest DSV.
Red Dwarf
The concept of GELFs is explored in several episodes of Red Dwarf including "Polymorph", "Camille", "Psirens", and "Emohawk". The writers of the series had stated early on in production that they did not want any aliens to exist in their show's universe; but as the series continued, in order to provide a stream of characters for the main crew to interact with, their cosmos was gradually populated with deranged robots and bizarre creatures that turned out to be the result of genetic engineering.
Humanoid GELFs
Kinitawowi
The Kinitawowi are bulky humanoids about six feet high covered in warts and shaggy dull orange/copper/brown fur similar to that of an orangutan. Kryten states some GELFs (though he does not detail whether this is a feature unique to the Kinitawowi) have their sphincteral orifice in their face, and as such touching of the face can be considered highly offensive to them. Their bodies are extremely tough; a direct blast of plasma from a bazookoid merely stunned a Kinitawowi at close range.