Penny Polendina is a character from the animated series RWBY, created by Rooster Teeth. She is an advanced android, known as a synthetic humanoid, designed with the ability to generate auras and wield powerful weaponry. Penny is characterized by her cheerful and innocent demeanor, often displaying curiosity about human emotions and social interactions. Her role in the series involves being a valuable ally to the protagonists, using her combat capabilities to assist them against various threats. Penny's journey explores themes of identity and humanity as she strives to understand her place in the world.