Kareem is "The Motivator" of the group.
On the bus Kareem says he did it to gain self-confidence. Nothing much happened to him in episode 1. In episode 2 he and the rest of the guys build their shelter by the water. The girls won because of that. In episode 3 he gets weird and Catarina says she'll hit him and that he's annoying. He is the social Outcast of the group. In the episode he and Holden are assigned for fishing. In episode 4 he helps make decisions that decide fate.