KILLIMAT-ARR (aka K-ARR)

They come from constellation Crux, near Gacrux.

It is a very hard race to track down or spot.

Both the USA and the Russian military have developed a special camera and radar system that allows to spot them when they are on Earth.

But even then, they have only been sighted 8 times.

The purpose of their presence is unknown.

When they are sighted it is usually in the area known as the Bermuda Triangle.