Fear's main job is to protect Riley and keep her safe. He is constantly on the lookout for potential disasters, and spends time evaluating the possible dangers, and risk involved in Riley's everyday activities. There are very few activities and events that Fear does not find to be dangerous and possibly fatal and a total Disaster.

Fear was usually making a list of all the outcomes he feared for Riley- which is Why he got along with Anxiety and had a Huge Crush on her, although his Crush on her was definitely obvious at Time's but Anxiety never noticed.

"THIS IS A ENDLESS LOOP OF TRAGEDY AND DISASTER!!- Oh! nevermind We're fine."