"I may be a girl, but I'll still kick your ass"
Ruby is a secondary protagonist in the fourth movie. Ruby is (much like Snowball) a warrior out to destroy Flint. Ruby's weapon is a double knife staff which she wields with deadly finesse. She and Snowball had a mutual crush on each other. Thus far she is the only female character in the series. She died at the end Battle with Flint, leading Snowball to avenge her death and give her body a proper burial.