

I think Moothra will die because of the simple fact that we see a huge amount of Gravity Beam being shot at her during trailer 3
King and Queen of The Skies.........

And for human characters Serizawa because he is carrying a bomb to godzilla while te Big G is weak so he may blow it up to power him up
King and Queen of The Skies.........

Spoilers? If you don't want spoilers, tell me and i won't post my reply
Zwei Wing is the best singing duo. Change my mind.

Ken Watanabe because he's detonating something and Mothra because of what Zilla already mentioned. Ghidorah will probably die at the end to Burning Godzilla, which will be friggin awesome!
If people weren't lazy, we wouldn't try to be efficient. If we weren't efficient, we'd never get anything done.

Let's be honest. We all know that (just by the titles) we know who's NOT going to die: Godzilla. So if you were going to make that as you're guess (that he dies), just remember that the next film after this is called Godzilla vs. Kong (2020), and not something else. Otherwise, it would have a different title (as in another monster fights Kong instead, not Godzilla). You're welcome for clarifying.
As for me (and my answer for who will die in KOTM), I'm not so sure. But there's only one way to find out. (Insert my forum signature here.)
"Let's just wait and see." - MinecraftDinoKaiju

BAH! I'm going to say who dies.
SPOILERS
Human characters
Dr. Serizawa: Blown up by nuke while saving Godzilla
Dr. Graham: Eaten by Ghidorah
Emma Russel: Killed by Ghidorah
Monsters:
Mothra: Killed by Ghidorah
Ghidorah: Blown up by Godzilla
Zwei Wing is the best singing duo. Change my mind.

Gmkgoji My biggest surprise out of all the spoilers is the fact that Rodan doesn't die. (Despite his track record after the Showa Era suggesting otherwise.) Guess he's finally getting the chance (and durability) he deserves. Hopefully, that means he's in Godzilla vs. Kong (2020).
"Let's just wait and see." - MinecraftDinoKaiju

Yes, i'm very happy that Rodan survives
Zwei Wing is the best singing duo. Change my mind.

See Rodan is so underrated I had a hard time choosing between joining team Godzilla or Team Rodan. Do you think I should join team Rodan?
King and Queen of The Skies.........

Gmkgoji What about that pilot who ejected and got eaten by Rodan?

MDK 2 Gmkgoji I'm pretty sure he survived Final Wars too, though he may have been beamed up or knocked out. We only really see him when he fights Godzilla alongside King Caesar and Anguirus

GojiFanPat I'm not counting other human deaths, just main human deaths
Zwei Wing is the best singing duo. Change my mind.