Tatejima serves as Auru Omega's robotic owl partner, created by her. It functions as a dedicated device, lacking expressed individuality or personality. Its design presents a gray robotic form featuring a dark blue face, cyan eyes, and a yellow beak, with orange-edged eyebrows and pink-lined wings. Its operational roles encompass data calculation, research report generation, and waccha collection. Tatejima debuted within the anime during the episode "Exhibition, Here We Come! The Magic of the Five" (WPM Episode 24). It holds the distinction of being the first non-magician partner in the Pretty Series.