Even without David's reminder through the Soul Prism, the three elves led by Hiatt knew they had to pretend not to recognize him due to his current "Silver Dragon skin."
But they couldn't pretend they hadn't seen him either.
After all, the 'bombardment' David caused with his spur-of-the-moment idea to combine Petrification Armor with his Comet Mode's high-speed cruising was indeed too spectacular. Anyone who had witnessed this shocking moment would definitely not forget it.
Originally, David had planned to 'do good deeds without leaving his name,' shaking his tail and leaving behind only the legend of the Silver-winged Star of Doom.
After all, he had come here purely because he heard King Giral had exploited a loophole in their agreement, seeking a dragon as an external ally to encroach on his 'offshore trade profits' in a fit of anger.