He is still a very cheerful and nice monster in his personality and demeanor. He doesn't dislike humans, but he is willing to kill and eat them without hesitation. He still has a bubbly outlook, but he has become much more outright morbid and dark in both his speaking and his puzzles.

Even though he is willing to eat humans,[citation needed] Papyrus is willing to protect ones he holds a bond with. One of which is Aliza. With Flowey's advice, she was able to befriend him.