Zoey is a survivor who knows how to use a gun and hand-to-hand combat. Alyx Vance is a young woman in her mid-twenties, she is a prominent figure in the Resistance campaign against the rule of the Combine. Chell is "abnormally stubborn" and refuses to give up, no matter how daunting the challenge. Chell is highly resourceful, quick-thinking, very intelligent, strong-willed, good at creative problem-solving, and does not panic easily. They are giants as they take care of their little friend.