As a Specter, it is unknown if he wears a Jack-o-lantern on his head or if it is his real face, although the latter seems the most plausible. This makes him completely indistinguishable from the other villagers, who also will ask for candy. Jack likes to play hide-and-seek, and since other villagers like to dress up like him, he can always be distinguished by unique characteristics. For instance, he is short in stature and has an orange-colored pumpkin on his head, and unlike other villagers also won't chase after the player (with the sole exception of New Leaf).