What is the monster like?

The creature is insistent that Victor create a mate for hime and threatens violence if his wishes aren't met. After a time, the creature reproaches him with having broken his promise, and asks if all his hardship and suffering has been for naught. When Frankenstein vows never to create another being like him, the creature calls him his "slave" and reminds him: "You are my creator, but I am your master." Seeing that Frankenstein will not be moved by threats, the creature swears that he will have his revenge upon his creator; he leaves him with a chilling promise: "I will be with you on your wedding-night."