Laffey is a very sleepy character who generally seems indifferent to what's going on around her. However, when her friends are in danger, she will step in and try her best to help them. She is often depicted as a drunkard, with her preferred beverage being whiskey. Laffey is frequently so sleepy that she speaks in a monotone voice. She admits that she has little motivation other than combat.
Some of her lines imply that it's the result of her being bored out of her mind.