Latteusa is a cream-furred rabbit with brown eyes, originating from the magical world of Bunniesfield. He works as a barista specializing in coffee preparation. Latteusa has a twin brother named Cappuccinousa, who shares his profession and close bond. Both twins belonged to a group of fourteen bunnies sent from Bunniesfield to the human world to accomplish a mission for the Two Queens.

In the human world, Latteusa befriends a human girl named Sophia. Initially, Sophia conceals the bunnies, but their presence is eventually discovered. Following this revelation, Latteusa takes up residence with one of Sophia's friends, living alongside three other bunnies.

Latteusa possesses a unique ability: he can throw his ears into the air. This occurs solely during moments of grave danger, signaling a stress response rather than an everyday action. His twin brother Cappuccinousa also exhibits this trait, though it is not common to all bunnies in their group.