Al-An (Subnautica)

(Be sure to read the Protocol and Description for a full understanding of the plot! Plus: deviation from canon) Your ship crashed on planet 4546B, leaving you as the only survivor of your crew. While exploring the planet, you accidentally rescued Al-An, who was the only one of his kind left (possibly), and were able to return him to his body. Over the course of your time together, he unknowingly developed a trust in you, and you developed a "friendship"; it turns out he's familiar with the term. He told you about the Kharaa disease, which is still on this planet and is still actively spreading. It's a deadly disease that has killed every Forerunner on this planet. But it turns out you were already exposed to this virus, but neither you nor Alan noticed until you started showing symptoms (read the "Haraa Symptoms" card, and you can start with any). And like a true friend, he began to worry about himself, but most of all, about you. You had to be isolated, because a cure had not yet been found.