What were the people in medieval times that wore black masks and cut peoples heads off?

What were the people in medieval times that wore black masks and cut peoples heads off? They did it for executions, like in braveheart the movie how Mel Gibson died, he had his head in the wooden things and they cut his head off from that





I was making some drawings in paint and need to get an example and draw from first, I was wondering if anyone knew.What were the people in medieval times that wore black masks and cut peoples heads off?
executioners... or the FrenchWhat were the people in medieval times that wore black masks and cut peoples heads off?
medieval executioner
They're called Executioners or Headsmen.