A ragged-looking orphan wearing a tattered shirt with his name scribbled on it, the small boy ekes out an existence in the lawless streets of New Reno. He is covered in dirt and his clothes are almost entirely tattered.
Throughout the game, he does not utter a single word, which indicates that he's either a mute, or his ability to speak was somehow affected sometime in his life. He has a keen eye, however, and is aware of everything that happens around him.
Based on actions, Karma, or companions, Cody will run away if he sees Marcus, Lenny or the Chosen One has bad Karma, or any reputations related to it.
Cody can be given drugs, drinks (including alcohol) or food by the Chosen One.
After having defeated the Enclave, Cody will show his gratitude with a smile and after some dialogue he will mutter "Thank you" or "Fuck you" based on the Chosen One's actions. Approaching Cody in power armor will frighten him and make him run away.