Cat Clancer is, as the name suggests, a Clancer with the appearance of a cat. She appears just after Marina wins the Athletic Festival of which Prof. Theo is the prize. Everyone is expecting Theo to walk onscreen, but instead Cat Clancer, rather humorously, steps into frame. She informs the congregation that Lunar has kidnapped Theo again and will help Marina only if she can defeat her in a game of Dodgeball. After Marina defeats her, Cat Clancer keeps her word and brings Marina to Lunar. In the fight against Lunar, Marina rides on Cat Clancer's back as he pursues them on his motorcycle. She enjoys riding on Lunar's missiles, which he scolds her for.