Diana - She is the youngest protagonist. Compared to Masha and Michaela, Diana is rather shy, reserved and slightly insecure by nature. She is clever, intelligent and rational in her decisions.
She doesn't really have much s***** experience and is therefore particularly curious and inquisitive about the subject, though she never actively broaches it. Active actions are needed to draw her inner rebel out of her.
She is a bit smaller than Masha or Michaela, petite and has a cute little butt. Her breasts are smaller, her skin is soft and pure. Judging by her hairstyle, she may look emancipated and feminist. However, the real reason is pure pragmatism.