The series is based on the popular New York Times bestselling book series collectively known as The Expanse,  written by Daniel Abraham and Ty Franck (under the pen name James S. A. Corey). Abraham and Franck will be show producers.
A tortoiseshell cat is a coat color where the cat is a molted brown cat with black, reddish, or orange patches. They can also have white paws. Tortoiseshell cats have unique genetics. The vast majority of tortoiseshell cats are female, because two X chromosomes are required to produce black, gold and orange coloring.
Top Cat. Top Cat (or simply T.C.) is the yellow-furred, charismatic, and clever main character of the series. He wears a mauve pork pie hat and waistcoat. He often rips off and/or tricks minor characters, Officer Dibble, and even his own gang. He does respect the effort the gang does for him, but he often takes credit for it.