Leprechauns, unicorns, elves and the like.
Angels too though no mortal can kill angelics.
But still some have no foresight or insight or plain sight. They are sideblind and look straight ahead following the prescribed path because they fear doing otherwise. So all they see is the hind end of the being in front of them and all those behind them see is their behind. Look straight ahead. Do not look up do not look down do not look sideways. Straight. Look straight ahead. Behind after behind after behind. Or a** after a** after a**. Shackled chained bound together to look straight ahead forever.
If that's your cuppa by all means keep drinking it.
