The hype has been building for Thor: Ragnarok for some time, and it absolutely exploded this week with the release of the trailer.
A Collector appearance would also fit with the reveal of the final Infinity Stone and with the Marvel Galaxy setting for the film.
The Collector (Benicio Del Toro) made his first major MCU appearance in Guardians of the Galaxy, although he also had a brief uncredited appearance in the post-credits scene of Thor: The Dark World.
Now, fans are getting into the smallest details of the trailer, re-watching time and time again (enough to make this Marvel’s most-watched trailer yet).