LillianLilly

It’s possible that the stormtrooper’s head is still in the helmet, but it’s not explicitly shown in the movies. In “Star Wars: The Force Awakens,” Chewbacca uses his bowcaster to shoot the stormtrooper, causing an explosion that sends the trooper flying. It’s left to interpretation whether or not the trooper’s head is still inside the helmet. As for the suit remaining intact, it’s likely due to the durability of the stormtrooper armor.

As for the stormtrooper appearing to be made of dark magic, that’s a matter of personal interpretation and opinion. The visual design of the stormtroopers has always been intended to convey a sense of imposing and uniform military might, and the use of dark colors may contribute to that impression.