Spirits are enemies in the game Ditto. They are one of the only two enemies to appear in the game.
These creatures are mainly dark with only red eyes and outlines to indicate their appearance. They have boxlike heads with two spikes sticking out the top, like ears, and a long cape trails behind them, similar in shape to the girl's cape.
Spirits can drift through any solid objects but only appear adjacent to a mirror and disappear once they're not. Although they are harmless in contact with the girl herself, they will try to chase after her reflection. Spirits are deadly when in contact with the girl's reflection. On levels in which they or snakes appear, an eerie track is played as background music.