Underswap Papyrus, Sans, Chara, and Frisk

Description: This took forever, and I am proud of the result. I know Sans's arms are terrible, but the rest of the picture is good. I don't know what I want to do next. Maybe Underfell. I've already done Genderswap Papyrus and Sans, but not Chara and Frisk, for obvious reasons. (They are both genderless)