The company was named after a real person and his artistic feats (see Wikipedia quote below):
"Pepper's ghost is an illusionary technique used in theatre, haunted house, dark rides and in some magic tricks. Using plate glass and special lighting techniques, it can make objects seem to appear or disappear, to become transparent, or to make one object morph into another. It is named after John Henry Pepper, who popularised the effect."
This is the thin and rather creepy model/ doll I made for him of Mr Pepper.
By taking the photo in sepia setting it rather looks like it could have been an authentic picture from the time of a rather fusty strange old gentleman.
The name was sometimes misheard and people have been known to phone up and ask for Peppered Goats!