Board Thread:Roleplay/@comment-26889090-20170601020441/@comment-29194274-20170603150232

Gaster returns the gesture.

sans notices gaster.

(NOTE: My headcannon is Alphys and Sans were Gaster's helpers and the two mentioned in Entry number 17. Sans and Papyrus are not related to Gaster, and the only things Papyrus knows about Gaster is he was a past royal scientist, and something happened and he died. And because I control those four characters, we're going with it.)