"Six bones" blocks your way

but he/they reminded you of someone/s/something/s, sans and papyrus?, are they amalgamates?, they fused together duel to papyruses condition that made him melt, sans fused/melted with him, they turn into one of the same entity, it's alphys fault?, or someone else?, sixbones forgot what happened to them in the past...

Six Bones: H... I.... I....