Devan Shell is Jazz Jackrabbit‘s arch-nemesis, who hates rabbits for “their disgusting, vile attitudes” after reading “The Tortoise & The Hare”. He is the leader of an organisation known as Turtle Terrorists. It is not connected with Shellion’s leadership, this including Dark Shell. While both turtles share the same surname, they’re barely even related to eachother – Dark Shell is Devan’s father’s brother’s nephew’s cousin’s former roommate. Turtle Terrorists might in fact be rebels of Shellion, but that can’t be proven so far.
Devan is easily recognisable between other turtles because of his oversized glasses. He also walks on two legs like for example Schwartzenguards, DoofusGuards or JJA‘s Turtle Troopers. In Jazz Jackrabbit 1, Devan is always using a vehicle whenever the player encounters him, just like Dr. Eggman from the Sonic franchise. However, in Jazz Jackrabbit 2, the player faces him in a gun fight, which is followed by his transformation into a demon. It’s not explained why this transformation occurs. Devan as a demon becomes incredibly muscular, grows devilish horns, a spiked long tail and wings to fly. He can also spew fireballs in that form. If you use either the buttstomp or you have a Sugar Rush active during the combat and you defeat him with that, you get 10000 pts, while you don’t get points if you just shoot him.
In Jazz Jackrabbit 1, Devan first becomes known when he kidnaps Carrotus‘ princess Eva Earlong and plans to trade her for the king’s crown. When Jazz begins his adventure to save the princess, Devan becomes more offensive and creates the Supercopy-2000, a cloning machine used by Devan to support his terrorist army. With it he also creates several mutants, including Jazz Jackrabbit‘s evil clone. In the end of the game, when Jazz destroys Twin Mega Battleships traveling to the Milky Way Galaxy and saves Eva Earlong and he returns to Carrotus in the Andromeda Galaxy, disguised as a taxi driver in the space taxi Jazz and Eva are catching. Eventually, in Jazz Jackrabbit 2 he returns to go back in time using the Diamondus Gem stolen from Eva’s wedding ring. His plan is to warp to a time before rabbits appeared on Carrotus and change history so Jazz and his brother Spaz Jackrabbit will never be born. Jazz and Spaz once again destroys his plans beating Devan’s demon form and retrieving the gem back by blowing up his time machine, with Devan inside. Devan is then crushed under a big piece of rock as his head pokes up from a pile of rubble.
While Devan is Jazz’s biggest enemy and is generally disliked by many, he still does have certain qualities – he’s a genius and his head is full of wicked ideas to conquer Carrotus. He also doesn’t give up, as it is already known that he will return in the next game.
Eat your lima beans, Johnny.