Kroydonian Beacon

The Kroydonian Beacon is a device that uses quantum entanglement to send signals instantaneously.

Role in the story
Every Kroydonian Assassination Crew member was given a Beacon to signal Kroydon in case an assassin found Mayhem. Superior never used his Beacon because he never found Mayhem, despite the idea that he could have signaled for help but that wouldn't have worked. Instead of help, and entire fleet of ships would arrive to attack which wouldn't have been good for the Earth. Since Abel repaired his ship anyways so he could return home, Superior gifted the Beacon to Abel just in case if he ever needed help.

History
The Beacon was first invented during the Great Kroydonian wars by Imeavil's army to have a signal that couldn't be intercepted in order to communicate with each other.