cross (a.k.a oreo)

At first, Cross was far more compassionate as the original Sans, wanting to believe in Frisk even when he tried to kill him. But when Frisk took control of their friends, including Cross' brother Papyrus, he lost all faith in him, and used all of his power to stop him by killing his former friends, even ruthlessly killing Papyrus and absorbing Frisk's soul. His greed and recklessness was shown as even when Chara told him he couldn’t overwrite, he killed Frisk anyway. Once he realized the truth, he had a mental breakdown and became completely delusional over the loss of his own world, even to the point of throwing his negative feelings at Chara. Despite this, he becomes excited and obsessive over tacos and chocolate, and was very friendly towards Ink before he told Cross that he couldn't revive the dead. Afterwards, he acts arrogant towards others and is disgusted by everything around him. Cross is also more active than the original Sans and was never lazy (EVER). He also became very selfish, ruining other AUs pacifist timelines just to restore his AU. After being revived by his universe's Gaster, Cross looked remorseful when he saw his revived friends and brother brought back by him, who looked at him in disappointment. After they left, he protected Dream Sans when Nightmare Sans and Killer Sans almost killed him and left with him to the Omega Timeline. This may prove that he may have his original persona back.