Deimos Code
Fluffy explains to Megumi Yakushiji that the Deimos Code is the relic of an ancient civilization that destroyed another world.
The Deimos Code is the code that summons the Deimos (the kaiju).
Also called the D-Code for short. It is broadcasted by someone designated the "commander," which gives the signal for the kaiju to attack.
The D Code's function is to maintain a link to one commander and access three locations at regular intervals (Universal Control / Automated Factory in Sector 1 / a satellite in orbit).
A program code that was written in 2188, 20 million years ago, during the heyday of an ancient civilization. The 2188 researcher, Ryoko Shinonome, was sick of humanity and believed peace could only be attained through genocide.[1] She was the one responsible for this code.