An investigator from the youth police department, he investigates cases related to Ignatz and her illegal treatment of children, and also with the case of Dr. Marcel and his "educational system" is undercover at the Monastery School. Gerret is a tall and young man with a serious face and pronounced cheekbones, he has gray skin and a dark gray suit to match his hair, black shoes are on his feet, his hairstyle is dark gray and his temples are shaved off on the sides and his hair is neatly arranged