Deltoidians

The Deltoidians (also called Deltoid Man, Deltoid Men, Deltoids), are an alien race, coming from Jupiter. Little is known about them by ordinary humans but more and more is being revealed at the time, by an unknown source.

Discovery
Their unexpected discovery in Year 2111 shocked the world. The late discovery can only be attributed to Jupiter's gas clouds, which hid the Deltoidians and their cities from view. The expedition which revealed them was the 2111 Space Odyssey. Headed by Maxil Crowford, Helen Kuvshinova and Bruce Buce, the expedition was highly controversial.

When Maxil Crowford finally set foot on Jupiter he was heard saying "My God, it's full of deltoid men!". This phrase was subject to much debate and Crowford was put on trial for saying that, as god had been disproved in 2087, and believers were hunted down. However this was all resolved when Crowford stated that by god he actually meant to say G.O.D (the now common phrase Good Old Deltoidians).

Appearance
Deltoidians are a very diverse genus appearance-wise, with deep-set features, varying numbers of eyes, highly geometrical head shapes, blobs of muscle hanging off their head, and sometimes, absence of a mouth. Their name is derived from their close resemblance to human deltoid muscles.

Creation myth
The founder of their civillization, according to their ancient mythology is claimed to be Trapezoidus Externatus. We are not very sure if there's any credence to this, as the texts are thousands of years old, but there has been a cult formed, which is against this belief, called the Sternocleidomastoids Primum. They've targeted many Trapezoidus monuments, bombing and destroying them.

Theories
Earth's scientist thinks he has found proof that they genetically engineered us thousands of years ago thus giving us our precious deltoids and there is much evidence behind that.

There also exists the theory that Demi might be a Deltoidian agent on Earth, however his true identity remains a mystery.