The complete beings that appeared before Malek and the others were elders from the Royal Family's previous generation. They were not directly connected with Aran's line like Ravan, but their influence, military strength, and magic level should not be underestimated.
Even so, they did not dare provoke Aran simply because they knew about the real inheritance he would receive after becoming the King of Armakea. As a matter of fact, these elders were far more knowledgeable about the real inheritance than Aran and his aides were.
The Elders' knowledge was not limited to what the Automatons could do but also how they could be activated.
Contrary to what Aran and his aides knew, the Automatons could be activated by anyone possessing the right blood and activation formula. If not for these two, the Elders would have long dared fight for the ownership of those Automatons.