If Looks Could Unkill

In some works of fiction, the ghosts look like sheets
Or possibly blobs, like the kind Pac-Man faced.
In others, they look as they did before death,
Tho often transparent and colored like paste.

If lucky, they’ll show as the age they prefer
Or, better yet, alter their shape as they will.
The less lucky spirits reflect their own corpse.
If ever I see them, I’ll head for the hills.