"My temper was sometimes violent,". This quote foreshadows the monster itself. It is said that the monster and frankenstein share a lot of characteristics. The characteristics of the word "violent", found in the quote, gives the reader some insight of how the monster will turn out to be if they make the monster before it is presented through the traits victor is shown to posses. Later in the novel we see how violent the monster is, killing everyone close to victor because of his temper. You can say that he has a violent temper.