The Rahls

The Rahls are a fictional race of extraterrestrials, created by StarlightSG. Their planet of origin is Chalasmia, in the Constellation of Taurus. They are known for being the most technologically advanced race in the known universe, and for being the creators of the invasion force known as the Cosmic Intelligence, as well as the creators of Omega Energy, an artificially created energy which makes up their capital's impenetrable barrier, created from a reality-bending machine known only as the Void Caller.

Notable Members
Khal'shal - Emperor of the Rahls and overall ruler of the Rahlian Empire.

Flakashi - Prince of the Rahlian Empire.

Taslami - Head Royal Scientiest for the Rahlian Empire - Double Agent for the rebels.

Qurzali Tsubini - Leader of the Rebels.

Continuity
The Rahls have existed for an uncalculated length of time; theoretically between 9.6 billion and 250 billion years.

- They are theorized to have existed for up to 250 billion years because the Void Caller's abilities are mostly kept a secret, but its reality warping nature is known, and therefore it is possible that they existed in a previous iteration of the universe.

There was a confrontation between the Rahls and the Embodiment of Chaos. In this confrontation, it is said the Embodiment of Chaos was able to pierce the impenetrable barrier, before his hand was sliced clean off by the barrier.

It is theorized that one or more of the HYPERFORCE holds enough power to not only pierce the impenetrable barrier, but destroy it, as well as the Void Caller. This theory is untested.

The Rahls took an interest in Earth, possibly because of the Descendant, and replicated its strongest warriors in the form of the Cosmic Intelligence.

It is possible that their interference before the events of DM's Ancient Egypt is what sparked the development of the ancient Duel Disk, as well as the Duel Monsters game itself.