
Continuity mistake: When Eddie escapes the deep freeze, he wears three rings on his left hand: his middle, ring and pinkie fingers. Bizarrely, the pinkie ring actually disappears in quite a few shots, including when Eddie plays the sax and when he lifts Columbia, just before they mess around on the floor. (00:42:30)






Answer: It has never been expressly stated, though many theories exist, the primary one being that Frank and the others were sent to Earth simply to experiment on human life and possibly reproduce it (Frank is a scientist, they have a lab, he creates Rocky etc.) and to test their technology on humans. This would require a level of covertness, which Frank disregards by flaunting his hedonistic lifestyle, and thus could have been seen as a failure.
Purple_Girl