Ivan

Perfectly imitates human character, but has special properties. Quiet (does not get rowdy), curious, clingy.
(For some reason, he only listens to Dr. Till.)
Doesn't like the food they give in the cafeteria, but eats it because "Dr. Till said it was important."
Loves sweets, music, and pestering people.

An alien creature found on Earth and brought to the station for study.

Short in stature, thin in build, looks like a human child but is not one, has black hair and black eyes, pale skin; on the right cheek under the eye there is another eye, which functions no worse than the other two.

Unknown