Cross Sans, referred to as Cross, is a Sans from the X-Tale AU, an AU that was erased by him by complete accident. He too is paired with the Bad Sanses. 

Cross, is a cold, introverted person, not talkative, and sometimes selfish and aggressive, however, he has a soft spot for those who care about him, and his plight for returning his AU back. He is in good standing with Nightmare and his group, but prefers to work alone. He isn’t noble, and is more of an antihero than anything else. 