| Imp |
| Impish gnome |
| Mischief maker |
| Mischievous one |
| Air-minded elf. |
| Mischievous imp |
| Mischievous gnome |
| Sabotaging sprite |
| Mischievous sprite |
| Unseen troublemaker |
| Glitch-causing gnome |
| Imaginary troublemaker |
| Invisible troublemaker |
| AMC model of the 1970s |
| Troublemaker of folklore |
| Mischievous troublemaker |
| Imagined mischievous spirit |
| Scapegoat for many a failure |
| Unexplained problem or fault |
| Unexplained technical problem or fault |
| Fictional creature born of a post-midnight feeding |
| Troublemaker invented by the British Royal Air Force |
| Small, imaginary creature that gets blamed for mechanical problems |