Many stories have twist with a happy,amusing, or heartwarming ending. It is funny and makes reade amused. Humorous twist ending sometime is called Lighthearted twist.
Stories with a twist or surprise at the end do not necessarily have to have ahappy ending. Many have been written that have an ironic twist. This ironic twist ending often reveal something about the darker sideof human nature. Examples of these types of stories include The Necklace. In other word ironic twist is tragic.
A narrator who has incorrect information built around their own perception of events that they pass along can build an unpredictable ending. The ghost who doesn’t know he or she has died, the robot who feels human emotions, the narrator who does not know they are a mannequin in a store are some ways to create a twist based on faulty or withheld information.