Gladiolus Rose is a lab assistant in Starling Academy. She was the assistant of Professor Peony. She helped the Star Darlings to identify the flowers they had received in their room one evening. She had said that those flowers contained supremely large amount of negative energy, a type of energy that she said doesn't exist technically in Starland. She confirmed that those flowers were grown on the Isle of Misera, a barren place which is full of negative energy.