Queen Felina

Queen Felina is one of the main antagonists of the Mouseheart book series. She is the Queen of the Ferals, a band of stray cats inhabiting the tunnels below Brooklyn.

Background
Prior to living in the subway stations of Brooklyn, Felina inhabited an animal shelter, where she struck terror in the hearts of the other animals living there. At one point, to avoid being placed on death row, Felina conned a mother cat into swapping collars with her, causing the vets to mistake Felina for the mother and having the other cat put down in her place.

Eventually taking to living in the Brooklyn tunnels, Felina used her beauty and cruelty to become the leader of a band of strays also living in the tunnels. For some time, she terrorized the rodents living in the tunnels, to the point that she was believed to be a ghost by those living above ground. While on one of her hunts, Felina grievously wounded a mouse named Ebbets and devoured his mate and litter. Some time later, Felina confronted the dying Ebbets, along with three rats, Titus, his friend Cassius, and Titus' lover Conselyea. Felina declared that she would eat one of them, and Ebbets offered to be taken in exchange for the life of the others. Felina, seeing an opportunity, bargained with Titus, offering to spare his life if he promised to supply her with prey. Titus initially refused, but Felina nevertheless kept the offer open before devouring Ebbets, allowing Titus and the others to flee.

Despite his earlier refusal, Titus eventually became desperate once Conselyea became pregnant with his litter and met the feral queen in her lair to take her up on her deal. Their bargain entailed that in exchange for sparing the rodents in the tunnels, Titus would bring in small animals from above ground to be sacrificed to her and the other ferals as food. Felina agreed, and Titus used this bargain to convince the indebted rodents to make him emperor, creating the rat colony of Atlantia. Soon afterwards, Titus opened up "refugeee camps", bringing in lost and downtrodden mice, rats, squirrels, and chipmunks, and giving them a home before sending them off, ostensibly to colonize the tunnels. In truth, however, they were secretly sent to the "hunting ground", where Felina and the other ferals would massacre them. At some point, Queen Conselyea discovered the truth of the peace accord and met with Felina, pleading with her to put an end to the hunting grounds. Instead, however, Felina devoured her. Zucker, the only survivor of Titus' litter, soon learned of his mother's fate and became determined to bring an end to his father and Felina's regime.