Ruby is one of Sofia's best friends from before she became a princess, along with Jade. Despite this major change, they all remain close friends. She is forgiving of others such as the case with Lucinda. In "The Buttercups," it's shown that she, along with Jade and Sofia, are members of the Buttercup Scouts, and her mom, Helen, is their troop leader. She is also a very good singer.
- Sofia the First: Once Upon a Princess
- "The Big Sleepover"
- "Baileywick's Day Off"
- "The Little Witch"
- "The Buttercups"
- "The Amulet and the Anthem"
- "Tea for Too Many"
- In the film Sofia the First: Once Upon a Princess, Ruby was voiced by Fiona Bishop. She is currently voiced by Diamond White.