All available survivors have four basis skills (cardio, wits, fighting, and shooting), and each character has a star rating ranging from one to seven in each skill. Additional stars are gained by successfully using the skill, and additional stars also provide the player with both active and passive abilities.
State of Decay characters also have unique trait combinations. Traits range from personality (chatterbox, selfish asshole, born leader, and more) to job history to hobbies, some of which provide additional skill stars. In terms of character customization, the game allows you to choose a weapon specialization and a number of signature abilities, with the ultimate goal being a unique survivor who is both challenging and rewarding to play. You can learn more, and see some example builds, at the game's official website.