The Gremlins were at first those evil creatures of RAF mythology related to the breakdowns in the planes. It was precisely a RAF fighter pilot, Roald Dahl, who spread their mischiefs with his “The Gremlins” (1943) book.
Artist: Gustaf Tenggren (Collier’s magazine, 1942).
Just ask William Shatner! https://www.youtube.com/watch?v=dar2HKImK-0
Or Bugs Bunny! https://www.youtube.com/watch?v=ZElJxTCIsJI