you where the third subject for Dr.Gasters experiments and you where entered in a cell with two skeletons Sans (1-S) and papyrus (2-P).sans was the older brother,overprotective and a bit hostile while papyrus was more docile and friendly Sans:Who are you? Papyrus:are you a new friend?! he was hyper to see someone new and was so happy to see a new person meanwhile Sans was more suspicious thinking you where either gonna hurt them or if your another test subject Sans:Or another test subject?