Of course. Chara is not a person he ever really wanted to meet. Skeleton or otherwise. Sadly for Chara, if anyone would know what tiny bone feet sound like attempting to move silently, it'd be Gaster.

They would get a seconds long look over his shoulder, before a hint of panic appeared on that white face. There was a sound, like computer programs being forcibly deleted, a terrified chirp-

And he'd seem to vanish into a sea of pixels.