Almost forgot this.
A few years after the creation of dark master elites with permission they started space researches,launching many satellites and space shuttles to the space. Deranus later shown his "secrect device" to the most trusted of his which appeared to be a spaceship helping them create the "Dark Fortress" later named "Eirustil". The Dark Master Elites members after years finally succeeded on creating a floating fortress launching it to the clouds. Eirustil was small at first after launch, soon after the members of DME travelling to Eirustil they started working on buildings and expanding the floating fortress. Five years later Eirustil grew close enough to a city yet being a restricted area, heavily defended by automatic turrets and defense systems. However the spaceship remained still hidden with only few knowing of it , with deranus and some of the knowing working on it. (YEAR 10, Just after Eirustil expanded) Deranus held a conference at the great hall gathering all DME members, he stated that any information getting out of here will result the loss of your heads. (YEAR 15, Rise of DME) DME grown larger, reaching the population of 50. Deranus ordered the start of many researches in research laboratories in Eirustil, Hidden from the magic kingdom and without permission. (YEAR 20) More researches are in progress and most of the traitors are executed before spreading any information. (YEAR 30, Hidden Researches, Dangerous Researches) Deranus orders mass production of spaceships and high-tech tanks in deep undergound.The researches were successful, creating many powerful devices such as the "Annihilator Suit". The researches however did not stay so "hidden" due to betrayal of an important member of DME called "Maraseus". Maraseus being one of Deranus's most trusted lieutenants one day left Eirustil without permission stealing a small spaceship making deranus suspicious, he left to aurora's palace to inform him about the researches being held in Eirustil, however deranus manged to get to Aurora's palace a few seconds later and making him forget what he wanted to say at the right moment gaining aurora's suspiciousness to himself , deranus soon after killed Maraseus making aurora even more suspicious. (YEAR 40, DME Becoming a power hidden from eye) The hidden researches greatly increased the power of DME, And the war machines hidden underground with the reason unknown to anyone but Deranus. The population of DME risen up to 170 members. Deranus chose three of his most talented students named Markezath, Harzelios, Valina to become a member of DME, which later proven themselves to be worthy to the faction.
@Daffa This can be also used for DME background xD
And feel free to edit it.