Ruby is a dark-half of Rachel, created by Stalker, after Rachel's mother was murdered by a Carnotaurus. Ruby has a lust for blood and she never hesitates to kill dinosaurs that stand in her way. Just like Rachel, she is talented at sword fighting but rougher at it. In Team Raptor Adventures, just like Dark JoAnn, she has her own body and she challenges Rachel to a battle. Rachel almost lost but with the help of Lola, Rachel finally kills Ruby and wins the battle.