Board Thread:General Discussion/@comment-27907368-20160323193924/@comment-26887879-20160610143303

At some point scientists (probably Gaster) decided that they should simply clone humans that already fell instead of waiting years for them to fall. However, the clones failed and all they got beings in form of human skeletons with souls too weak to persist after death. That's how skelebros are made. Sans was probably a clone of Patience, Papyrus is clone of Bravery.