King Ghidorah will have his iconic chirping sound effect roar in Godzilla 2: King of the Monsters according to director Michael Dougherty! After Dougherty tweeted the latest Ghidorah movie still from Godzilla 2, one fan comically asked if "But will he still go bidibidibidi...", to which Dougherty simply replied "Yes.":
So, this essentially confirms Ghidorah will have his iconic sound effect in the new movie! This also suggests Rodan and Mothra will likely have their iconic roars mimicked in the new film as well!
Keep it locked to Godzilla-Movies for more updates on Godzilla 2 and Godzilla vs. Kong!