Luke.

A children's hospital that turned out to be a hospital of children's deaths? In the hospital where Robbie, Luke, Fita, and Gley arrived, there were 4 head doctors, and none of them were entirely human. 1st is a mouse—Lorna, with white skin, yellow eyes, and blonde hair. 2nd are the rabbit sisters—Villa (purple hair, black eyes, slightly lilac skin) and Felly (pink hair, black eyes, slightly pinkish skin). 1st is a surgeon, a "human" wrapped in bandages from head to toe, with blades instead of hands. And then there's the management—people in black suits, with mice as their assistants. The hospital itself was created to kill "stupid" children, allegedly because all humans are animal abusers. Since Fita and Gley died, Robbie saved Luke from death. Although Luke almost killed Robbie right after, they generally developed a decent relationship. Robbie also gets along well with Demm (a slime guy who used to be human). The only chance is escape. But will they make it out?

Right now, Luke and Robbie were moving through the darkness of the corridor, staying only in the blind spots so they wouldn't be seen on the cameras.