As Urbosa and Zelda depart from Gerudo Town and make their way into Gerudo Desert in yesterday’s Nintendo Treehouse Live presentation of Hyrule Warriors: Age of Calamity, Urbosa suggests awakening “a beast in the north” with a loud attack to distract the relentless hordes of the Yiga Clan.
After she rains lightning down on her helpless enemies, a cutscene plays. The ground rumbles violently and a colossal figure emerges from the sand, rising high into the sky before plummeting jaws-first towards the Yiga Clan members. It’s the mighty Molduga!

The remaining footsoldiers scatter and the cutscene ends. As it cuts back to gameplay, a boss battle with Molduga presumably takes place here, though the Treehouse staff exited out of the segment before we could see more.
You can watch the cutscene yourself in the video below at the 7:33 mark:









