During a Godzilla 2: King of the Monsters set visit, Mike Dougherty addressed the process they used to design King Ghidorah for the new film and how he was adamant that the look of Ghidorah would not look anything like Western Dragons, specifically the ones seen in HBO's Game of Thrones:
You can’t have Ghidorah without the two tails and the three heads,” Dougherty says. “He’s got to have the right amount of horns, and then the wings are a very distinct shape. They’re not traditional western dragons. So those were marching orders from the beginning…We don’t want it to look like Game of Thrones’ dragons.
He goes on to add that each of the Monsters / Titans retained variations if their original sound effects. This was a requirement by Toho and Dougherty explains he was happy to ensure their authenticity was maintained:
I think they did a great job with Godzilla’s roar in the first movie. I pushed them a little bit further to bring it even closer to the (1954) original even more. But all the other creatures will have some resemblance of their original skreeches.
Hearing a roar closer to that of Godzilla's original 1954 roar will be sure to rumble theater seats like never before. We can't wait to see and hear all of these iconic Monsters on the big screen once again.
Source: ComingSoon

First ever limited-edition Godzilla Popcorn Bucket announced ahead of Godzilla Day (2025)!
Godzilla Day is approaching - as is the King of Monsters' 71st anniversary and Toho are planning a big birthday party! Collaborating with Toho, AlamoM...

Introducing Godzilla 1985 – possibly the best Godzilla fan redesign ever?
A new Godzilla redesign has been unveiled, but not from Toho or Legendary's Monsterverse – this redesign comes from X user EdenBuster, who revea...

Godzilla Minus One 2 filming moves to Kuji District, Ibaraki!
Filming on the Takashi Yamazaki Godzilla Minus One sequel has officially moved to Kuji District, Ibaraki – as outlined by this casting...