The Ciakar allegedly is the name of a reptilian species from the Draco constellation. They are considered the royal caste among the reptilian races.

There is royal line of the reptilian race called the Ciakar. They range from 14 to 22 feet tall and can weigh up to 1,800 pounds. They do have winged appendages and they are awesome beings. They're extremely clairvoyant and extremely clever, and they can also be extremely sinister.
(Alex Collier, "Let's Do Some Questions,"

Reliability of information: the only source of information for the Ciakar is Alex Collier, who was told about them. So the information is based on hearsay, at best.