Well, I have some ideas... but no real big story just yet (I mostly write Sonic fanfics, and have yet to make a Jazz fic).

How about a short story of how Iguanus revives Devan:
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In the dark planet of Noctera lived an evil iguana sorcerer. He was dressed in a dark druid robe, and had knowledge to various dark magics. His name was Iguanus.

One day, he was meditating in his personal chambers, when he sensed an evil beings death. This being was not as evil as Iguanus, but came close. Iguanus had sensed the death of Devan Shell, enemy of Jazz Jackrabbit. "This 'Devan Shell' can be a perfect ally to my cause," thought Iguanus, as he prepared to make a spell to bring him back to the mortal plane.

In his ritual chamber, Iguanus stood within his magic symbol and chanted an arcane chant. Soon, the symbol glowed, and the spirit of Devan Shell appeared, standing trance-like before his summoner. Soon, flesh gathered around the spirit, and air entered his lungs, and a new pair of spectacles appeared on the turtle's nose. "Eh?" Devan said in shock. "I LIVE AGAIN!!" "Yes," said Iguanus. Devan bowed before the one who brought about his rebirth and said, "I thank you for bringing me back, sir. As a token of thanks, I will pledge my loyalty to you!"

"Excellent!" laughed Iguanus. "Now, let us gather allies and prepare a new attack on the universe. Soon, all will know the power of Iguanus! Ha, ha, ha..."