👹

A character with goggles and a large weapon appears in a dark, smoky environment, followed by a close-up of a character with a mechanical arm, then a figure with a glowing jack-o'-lantern head, and finally a character with a pumpkin head filled with colorful items, all set against a dark, misty background with a title card reading "OVERWATCH HALLOWEEN TERROR Mega Master" and a symbol appearing in the mist.