The only heroine post i think Ruby could fit is on Silhuette Mirage cause she is Bright and Dark as Shyna is Silhouette and same time Mirage. Here Ruby is dressed as Shyna Nera Shyna, with some changes. Shyna is cute and kind and strong and smart and sweet and humble, another way Ruby is like her. The hair is changed too for more look like. I wanted a background with Shyna´s favorite phrase "I did it!" but it didn´t look good so i got rid of it.
It´s just one girl, her name is Shyna Nera Shyna. You can like her since she is very joyful, i like her cause she is also brave and savage, she grab her enemies and his hair turn on fists for hit them.