Trivia: When Richie is watching YouTube, the video review he watches talking about "Stab 8" features a cameo from James A. Janisse and his wife Chelsea Rebecca. They are popular YouTubers who run various horror-themed shows on their channel "Dead Meat." As of 2022, they have over 5 million subscribers.
Trivia: Sonic not being able to swim is a callback to the original video-games, where Sonic can't swim. When he's underwater, he can only movie like normal (albeit slower), and will drown after a brief period. In order to avoid drowning, he has to either surface or make contact with large air-bubbles that he can breathe in. This is also referenced in the movie when Sonic sucks in a giant air-bubble in the temple ruins while he's underwater to avoid drowning.
Trivia: When the Daily Bugle is shown with the main article of Morbius being apprehended for murder, in the top right corner of the paper you can read "Black Cat: Friend or Foe?" This is a reference to the antihero and frequent Spider-Man ally Black Cat. Sony had previously attempted to develop a movie featuring Black Cat and Silver Sable, which would have been called "Silver and Black." This could be Sony planting the seeds of bringing the character to screen, or it may just be an Easter egg.
Trivia: With this movie, Thor will become the first MCU hero to have four stand-alone movies. He's also the first Marvel character overall to have four stand-alone movies within the same franchise. The closest before then was when Sam Raimi's Spider-Man 4 was in pre-production before being canceled and rebooted.
Trivia: Willis' LAST film that will be released. It was filmed about a year before the 4/04/22 announcement that he was diagnosed with aphasia (a type of frontotemporal dementia that affects the ability to speak, write, and understand written language) and "stepping away from acting."