The Ultra-Cadets are a group of humanoid females who defend their planet and people from evil.
The Ultra-Cadets came to Earth looking for Coop, but instead they mistook Coop for Jamie. They needed Coop's assistance in fighting the Kurdock, so Jamie went instead not knowing what he was getting himself into. Later, Coop and Kiva arrived on their planet looking for Jamie, revealing that Jamie was an impostor. In the end, the Ultra Cadets were attacked by the Kurdock, but it's unknown if they survived. Apparently they did as Goat later goes to a movie with one of them.
Like the Sailor Warriors in Sailor Moon, the uniform worn by the Ultra-Cadets resembles a popular style of Japanese school uniform, the sērā fuku or "sailor suit". Sailor Moon creator Naoko Takeuchi attributes the idea for this motif to her editor, Fumio Osano. Originally, each Sailor Warrior had her own fairly unique outfit, related to the others only in its basic form, but in later stages of character design Takeuchi settled on a more unified appearance.
- Overall they are an homage to Sailor Moon. Galaxia, Comet, and Pulsar parody Sailor Jupiter, Sailor Mars, and Sailor Mercury respectively; Nova is an amalgam of Sailor Moon and Sailor Venus.
- Like Sailor Moon, Nova's transformation takes much, much longer than the rest.