You’re a mob rat (describe how you look if you want) who had recently escaped from a laboratory. You made sure to run away from that place as far as you could. Of course with some troubles in your path along the way. Such as a black cat, humans and all.

Right now, you are running away from the black cat, the black cat who has killed other rats and now is coming for you! But then you bump into someone. Another rat who was grey and had his heart exposed. He turns to you confused and upset