Seeing MOS we knew there would likely be some references to other heroes and villains.
I've listed several that I caught.
1. Animals that visually look like Doomsday with bony protuberances.Give the genetic manipulation not a stretch to assume a doomsday monster could exist in the Universe.
2. the obvious Lexcorp
3. Obvious Wayne Enterprises satellite
4. Cnl Hardy = The Guardian
5. Dr. Hamilton - Star Labs - Cyborg - Superboy - etc...
6. Word of the day relating to unknown invaders - Trident - may relate to Aquaman that and Atlantis, given the government organization that was running the show.
7. The kryptonian suit worn when Zod is showing Supes the history of the outposts...these were the suit Lex wears to fight Superman
8. The World Maker is a ship that Brainiac uses. Symbology is that same
9. Captain Carol Ferris is the chick at the end who thinks Superman is Hot.
What did you see...?