Ruby Lucas is a fictional character from the popular television series Once Upon a Time. She is portrayed as a modern-day version of Little Red Riding Hood, known for her red cloak and adventurous spirit. Ruby is characterized by her strong personality and loyalty to her friends, often stepping up to help those in need. In the series, Ruby has the ability to transform into a wolf, which adds a unique twist to her character. Her storyline explores themes of identity and self-acceptance, as she navigates her dual nature while forming relationships with other characters, including Snow White and Charming.