Mark's Group was a group consisting of Mark, Trina, Alec, Lana, Toad, Misty, Baxter, Darnell, and later Deedee. Mark and Trina joined the others during the Sun Flares. Alec was the leader of the group, with Lana acting as his close Second-in-Command.
Deedee was found by the group after the Flare virus was released on the villages. By then, only Mark, Alec, Trina and Lana remained.