Hybrids

Extraterrestrial Human Hybrids are often reported by those who are abducted by Alien Greys. Often times a "family unit" will be observed, headed by a Grey in the "male" role, with a hybrid female acting as a mother to younger hybrid children. They are usually smaller in stature, with lighter builds, and larger heads and eyes, and often appear "sickly." Some abductees have described them as nearly indistinguishable from normal humans.

Proto-Alien

An idea for a creature which could have evolved into the popular Alien Gray. They have always looked a bit insect like in my opinion.

Ilkley Moor Alien

On December 1st, 1987 policeman Phillip Spencer spotted a strange creature on Illkley Moor in Yorkshire, England. The creature seemed to be making gestures indicating "stay away." Spencer managed to get a blurry photograph, which shows a humanoid creature about 4 feet tall, with long arms and a blueish tint to it's skin. After noticing an instance of "Lost time" around the episode, Spencer decided to undergo regressive hypnosis and regained more memories, most of them typical of abduction experiences - artificial levitation, medical examinations, a strong environmental message. Along with this came further descriptions of the creature, such as their "funny feet" and three fingered hands, with fat fingers "like sausages."

Was the Illkley Moor alien real? Unfortunately the photograph is too gainy to be conclusive. However due to the integrity of the witness this case remains one of the more credible.

Mantisoid Alien

Mantisoids are among the many different types of aliens reported by abductees around the world. They are described as tall, with six legs, and a peaceful demeanor. Although they speak to each other in clicks, they are able to communicate with other beings via telepathic abilities. Mantisoids have been seen during abductions working alongside other alien types such as the Grays or Reptilians, usually performing various types of medical experiments.