Eric Hastings was a survivor of Oceanic Flight 614. As an adult, he lived with his grandmother until she died, which resulted in Eric inheriting a large amount of money. When his plane crashed, he met and bonded with fellow survivor Jessica. After a series of mysterious events and kidnappings, Jessica decided to lead a group to The Others, and Eric joined her.
Eric was with Jessica and Brent when they were attacked by The Others. He retreated to the camp, and Jessica returned later as well. He decided to stay behind when Jessica and some others went looking for Brent, but later felt guilty and worried about this Jessica.