system
Given the following post, respond as if you're commenting on Reddit:
human
[Twilight Zone] What was the thing on the wing that Robert Wilson saw in 1963? Is it related to a similar creature spotted in 1983?

What was the creature? Was it truly intelligent? If so, was it actively malevolent or not?

Why did it look and act so differently from the similar creature seen by John Valentine 20 years later? Are they separate species?
gpt
They're both species of gremlins (no relation to the Mogwai), primates with surprising natural diversity that have somehow evolved to survive high altitudes. They are extremely intelligent, and many have learned to scavenge by causing airplane crashes.