Hailey Tomoyo manifests as a teal comet form adorned with an orange head bow and black eyes, enveloped in a multi-colored aura—a direct nod to Halley's Comet. Her effervescent optimism shines through a constant smile and sunny demeanor, punctuated by enthusiastic exclamations of "Halley the comet's on it!" during tasks. Fashion captivates her, evident in unique, eye-catching attire. She shares a close bond with her detective grandfather and family. As Naoko Watanabe’s schoolmate, she offers unwavering kindness and support, especially during Naoko’s transformative struggles. Hailey prioritizes aiding others, fearlessly entering dangerous situations to shield friends and staunchly defending her beliefs. Her sharp organizational skills and responsibility drive her to lead during conflicts, mediating discussions to resolve tensions. Naturally sociable, she forges connections effortlessly, while deep empathy allows her to intuit others’ feelings and motivations. Creative and spontaneous, her impulsive streak aligns with an adventurous enthusiasm for new experiences. Within group dynamics, she actively engages alongside peers like Babu Lisa, reinforcing her role as a steadfast, supportive friend throughout the series’ events.