Who could've died

The soldiers near Heliot's vicinity and also the ones in the front line halted. Their eyes went wide, staring blankly in Heliot's direction and the debris falling on the ground. Never once in their career had they witnessed someone stop Heliot's sand dragon. Therefore, the sudden pause and shock.

If the person who stopped Heliot's sand dragon was an enemy, then this person was a formidable opponent. Which also meant they would be held back from advancing. 

Silence descended in the area, all eyes on Heliot and the thick smoke before him. The first thing they saw through the thick fog of dust was the establishment. Everyone subconsciously held their breaths, anticipating who was the person who stopped Heliot's rampage.