Penny Polendina serves as a supporting character in Weiss Schnee's psychological conflict narrative. As an android student at Beacon Academy, she retains her characteristic cheerful, excitable, and kind personality. Her role involves assisting Team RWBY in their mission against a Nightmare Grimm affecting Weiss. Within Weiss's dream world, Penny fights alongside the team against Nega-Weiss, a manifestation of Weiss's negativity. During these battles, Weiss's subconscious perceptions alter reality, causing Penny's signature weapon, Floating Array, to malfunction. Weiss misunderstands the weapon's mechanics, incorrectly configuring the swords with the scythe blade and gun barrel placed at opposite ends. This misinterpretation impairs Penny's combat effectiveness until Ruby Rose corrects Weiss's understanding of the design. Penny consistently acts as a supportive ally throughout the crisis, aiding efforts to reach Weiss and combat the Nightmare's influence in the dreamscape. Her involvement concludes with the nightmare's resolution. The storyline does not explore significant character development or her artificial nature. Events from her main series narrative, including her creation by Pietro Polendina, participation in the Vytal Festival Tournament, or subsequent deaths, remain unmentioned.