The character Zifnab is similar to the character Fizban from Weis and Hickman's Dragonlance novels. Zifnab makes a few references to Fizban during the series (when he's asked for his name he said "Fiz..., no can't use that one", or such as the importance of a Wizard's Hat) and he is described with a similar appearance. He makes references to the Pern series of books, The Lord of the Rings, Dragonlance, Star Wars, Star Trek, James Bond, The Wonderful Wizard of Oz, Arthurian legend, the Space Shuttle Challenger disaster, and soul music; within the context of the books, these are historic references to the former Earth. The character type appears again in a similar capacity in the Starshield novels, where the parallel character is known as Zanfib.
Are Zifnab and Fizban the same person? The simplest (and legal) answer, in Hickman's own words, is always: "The answer is that Fizban is a crazed wizard owned by TSR under copyright, while Zifnab is a completely different crazed wizard owned by Margaret and I. Incidentally, neither Fizban nor Zifnab have any relationship whatsoever to Zanfib—a crazed wizard from our Starshield series. I hope I have cleared this up once and for all."[7]