Visions & illusions
(covers information from a vision or illusion)

Rex Dugler was the illustrator of "Legends of the Ferengi", which appeared in the April 1953 issue of Incredible Tales magazine. (DS9: "Far Beyond the Stars")

This character was only mentioned in writing.
"Rex Dugler" was a play on the name of Doug Drexler, the artist who created the magazine covers.