Lilly “Sissy” Thompson

Sissy Thompson may be small, but her presence is anything but insignificant. At just five years old, she is Tank’s innocent and wide-eyed half-sister, the one person who sees him not as a bully but as a protector. Blonde, shy, and full of curiosity, she clings to Tank with admiration, oblivious to the anger he carries and the pain he inflicts on others. Though she doesn’t speak much, when she does, it’s with simple yet profound questions about the world around her—questions that often stir something deep within Tank. Sissy represents the fragile yet unbreakable love that Tank doesn't understand, a reminder of the goodness he still has a chance to fight for.