Ame is blonde with blue-grey eyes
Irys has pointed ears, "horns", long red hair, a red left eye and a blue right eye
Kronii has a clock halo over her head, blue eyes and dark blue hair

The three girls act like a typical mixed group of young girls, trying to cooperate and get along, bickering, making up, playing pretend together, etc.

Ame tends to injure herself but shrug it off
Irys is more conservative but if she does get injured she'll cry
Kronii will offer first aid to anyone who gets hurt