Hidden Ghosts by Ursula Adler is a free bat-themed dingbat font made of compact, symmetrical silhouettes. Each ornament combines pointed wings, masklike faces, and curling flourishes. Dark central shapes and looping outer strokes create a consistent Gothic look.
Halloween posters are its clearest use, with the creature motifs also fitting invitations and seasonal merchandise. The symbols also suit fantasy game graphics and dark music packaging. Their mirrored forms can become illustrated emblems among cobwebs, moons, or other nocturnal imagery.