Alpha is a supporting character in this crossover special, appearing as a member of the Shadow organization known as Shadow Garden. Within this group, she serves as the deputy commander, acting as the second-in-command to her master, Shadow. Her background is not detailed within the events of this particular episode, but she is shown leading the other members of the Seven Shadows in their headquarters located in the city of Alexandria. Her personality is portrayed as dutiful and serious, taking her role and her master’s instructions with great sincerity. When Ainz, who has been swapped into Shadow's body, asks her a direct question about her identity and Yuri Alpha, she becomes confused but remains respectful, interpreting her master's seemingly unusual words as a new test or a great honor. She is a capable leader who is focused on her mission, as she is the one who prompts Shadow to explain the human custom of Halloween to the group. Her key relationship is with her master, Shadow, whom she and the rest of the Seven Shadows are completely devoted to. Her role in the story is to react to the body-swapped Ainz and to participate in the resulting comedic situations. She is present when the mysterious door appears in the mansion and prepares to fight the Pleiades when they are confronted. Her development is minimal within the single episode, as the focus is on the situational comedy of the body swap. Her notable abilities are not specifically showcased, as the plot revolves around character interactions rather than combat, though her position as deputy commander implies a high level of competence.