Joker is still haunted by the memory of his friend Cowboy, whom he killed in order to keep his squad from being cut down by a sniper; as a result, his behavior has become increasingly erratic and violent.
Joker is still haunted by the memory of his friend Cowboy, whom he killed in order to keep his squad from being cut down by a sniper. As a result, his behavior has become increasingly erratic and violent.