Halley Tomoyo attends the same school as the main protagonist, distinguished by a vibrant teal hue resembling a comet’s tail, accented by black eyes and an orange bow atop her head. Her design mirrors the celestial imagery of Halley’s comet, complete with a shimmering multi-colored aura. Brimming with bubbly optimism, she engages others with infectious enthusiasm. A recurring trait is her tendency to linger close to Babu Lisa, culminating in a direct plea from Babu Lisa in the *Imposter Gauko* episode (English dub) to "stop following me around." Halley embraces responsibilities with zeal, declaring, "Halley the comet’s on it!" as her signature rallying cry. Documented details remain confined to her aesthetics, demeanor, and episodic interactions within the series.