The grandmother and The Misfit are both complex characters in the story, and their actions can be interpreted in different ways. The grandmother is portrayed as manipulative and selfish, with her desire for a detour leading the family down a dangerous path. She is also dishonest, claiming that she recognized The Misfit when she had not, in an attempt to save her own life. On the other hand, The Misfit is a convicted criminal who has committed multiple murders. He is ruthless and shows no remorse for his actions.
While both characters can be seen as "wicked" in their own way, The Misfit's actions are more extreme and violent, leading to loss of innocent lives. However, it can also be argued that the grandmother's manipulation and lies ultimately led to the family's demise. Ultimately, it is up to the reader to interpret the characters and their actions based on their own analysis of the text.