Which details lead you to believe that Putnam will be a fierce figure as the plot unfolds?

Putnam's fierce nature is evident through his aggressive demeanor and relentless pursuit of personal interests, particularly his desire for land and power. His willingness to accuse others and manipulate the witch trials for his gain reveals a ruthless ambition. Additionally, his interactions with other characters, marked by hostility and intimidation, suggest that he will stop at nothing to achieve his goals as the plot progresses.