Jacob

Jacob is an old friend of Ryan's who seemed to be one of his supporters when he was leading the group.

Information
Jacob is a good friend of Ryan's. He was a supporting leader for the group and Ashleigh's lover. When Ashleigh was faced with the Infection, he was willing to take it from her and take it himself.

Despite this, he managed to stay in control of himself and resist the mutation from the Virus.