|Voiced by:||Larry Drake|
Jackson Chappell was a medical caretaker who worked for Bane in his declining years.
As he grew older, Bane's body grew weaker, degraded by his constant use of the super-steroid Venom. At some point, he hired Chappell to supervise his care and his estate. Eventually, Bane grew so weak that he could hardly move, and needed outside assistance to breathe. Ironically, his body was so dependent on the drug that he needed to continue using it, just to stay alive.
Until then, Bane had kept the formula for Venom a closely-guarded secret. But to survive, he entrusted Chappell with the secret, just to keep his supply going. Chappell, inwardly corrupt, saw the chance to cash in and started a secret, illegal business, dealing the drug in easy-to-use skin patches called "slappers" to high school athletes (and presumably others).
When Batman came to investigate Bane, Chappell feigned ignorance, but later Batman tracked one of his dealers back to his hideout. Confronted, Chappell used slappers on himself, increasing his strength many times and making him more than a match even for Batman's cybernetically-enhanced suit. However, Terry tricked him and caused him to tumble onto his own slapper-making machine, covering his whole body with the patches. Driven nearly insane with the pain of the drug, Chappell charged at Batman in rage, only to be blinded by some nearby chemicals. Swinging wildly around, he triggered an explosion in his own lab that knocked him senseless. The trauma of the blast, combined with the overdose of the drug, left him a brain-dead vegetable.