Trivia: Wade Wilson is on the "Dead Pool", seen briefly at the back of the bar, but so are various celebrities, such as Bill Cosby, Kanye West, and Charlie Sheen. Perhaps most notable are Ryan Reynolds and TJ Miller, stars of the movie.
Trivia: When Mr. Jimmy is calling out names on the boat to see who's missing, the real Mr. Jimmy Harrell is standing next to him, wearing a dirty grey T-shirt (and presumably playing a random rig worker). You can first see him (from the back) when Russell calls out Caleb Holloway's name. The first view of his face is just as Russell gets out the life raft onto the deck of the rescue ship. (01:28:30)
Trivia: The Christmas ball scene is symbolic: since it is a masquerade party all the guests are in disguise. The only guests who aren't wearing masks are Bruce Wayne and Selina Kyle. This implies that their real personalities are Batman and Catwoman respectively, and that their public persona is the real disguise.
Trivia: Warwick Davis plays one of the marauders. He also played Wicket the Ewok in Return of the Jedi.
Trivia: Right after Mr. Peck the EPA man forces the Ghostbusters to shut off the grid and the energy is released into the sky, an ad for Stay Puft can be seen on a building. (01:09:00)
Trivia: While Mr. Freeze is at Shaugnessy's, when Shaka smacks Dick across the room, he ends up flat on his back, and in the close-up when Dick raises his head, the buttons on his vest switch sides momentarily. Then the buttons revert back (noted in trivia because it's better when clicked through slowly). (00:24:25)
Trivia: While Lin (played by Jackie Chan) is in disguise and working in his daughter's school cafeteria, his name tag shows Jackie Chan. (00:31:25)
Trivia: During Carol Danvers' outfit color change, one of her outfits turns white and green. This is an homage to Mar-Vell's original uniform color scheme. There is also a red and yellow combination seen, which could be a reference to the DC character Shazam, who has also been known by the name Captain Marvel.
Trivia: When Rory is walking down the street wearing the Predator mask, there is a bright red/orange alien walking toward him. This is a nod to the original Predator costume that looked like a big bug, the red/orange color was used to film the stealth camouflage scenes. The bug suit was scrapped after a few test shots proved how silly it looked. Jean-Claude Van Damme was in the original costume, but he was let go when the costume was scrapped. (00:45:20)
Trivia: In Lori's dream, kids teasing a young Jason place a burlap sack on his head, similar to the burlap sack Jason wore in Friday the 13th Part 2. Jason started wearing the goalie mask in Friday the 13th part 3. (00:08:00)
Trivia: Nolan North, who does motion capture in the games for Nathan Drake, is on the beach at the resort. He asks Nate and Chloe what happened, and they say they fell out of a plane. He says that happened to him once. He's referring to the third game in the Uncharted series where similar events happen.
Trivia: All the cast and crew (including the producer) had to undergo a grueling one week of military training (which they dubbed their 'week of hell') under the supervision of a battle hardened ex-navy SEAL. By the end most people were naturally eager to give their trainer a little of his own medicine. Miss Jovovich (Alice) did: he's the zombie she head kicks into the test-tube cabinet and then steals the gun from (before fighting the zombie dogs). What sweet justice.
Trivia: Spider-Man creator Stan Lee makes his standard cameo appearance for this film when Spider-Man and Doc Ock are fighting on the side of the building. The first shot of the street during the fight shows a woman being pushed out of the way as some debris falls; the man pushing her is Lee.
Trivia: Pom Klementieff, who plays Mantis in the Guardians of the Galaxy films, also directed by James Gunn, has a cameo here as one of the patrons inside the club on Corto Maltese.