Before Swap Dream ate 999 golden apples. His personality was exactly the same as the original Dream. Swap Dream is incredibly arrogant, he considers those who are weaker than him pathetic, and if he finds someone who is stronger or on a level with him, he will immediately rush into battle, laughing insanely. After eating 999, he went completely insane. He is very rude, and calmly throws insults at those he does not like (almost everyone) as well as just showing someone the middle finger.