Blue bean! Or what I like to call him cold blue. He mainly lives in snowdin completely oblivious to the dangers of the dark. Don't worry, he's well protected. Like most sane or semi same people in the underground he prefers lighted areas and breaks down if he's left in the dark.
Ink or in this place, Blank, is the silent type. Not because he doesn't want too, he's very expressive, but his mouths don't work that way. He follows Blue around since the little guy has no means of self preservation. They're best friends and Blue is like his only friend. Blank is an "evil spirit" so pretty much everyone else doesn't trust him. Though, swap Paps is learning to respect him. He Also wants to be friends with normal Papyrus but he's afraid that he'll scare him.