Strider is a former member of the "Monolith" group, when the effect of the "Brain Burner" disappeared due to its shutdown, many stalkers who fell under the influence of this machine regained their sanity, Strider and his squad were among them. He still regrets what he did while he was in the group, but is ready to move on with his life, he is still tormented by nightmares associated with his past work, but he is strong enough to endure it. He left Pripyat for the vicinity of the Jupiter plant