Mr Dowling is one of the main antagonists of the Zom-B series. He was created by Satan to lead the dead to war with the living. He has control over the undead hordes and the mutants. He wears a clown-like attire, only more twisted and gruesome. He cannot talk, only grunt and, but his mutants are able to understand him through telepathy.
Mr Dowling was created sometime in the 1940s after Doctor Oystein became revitalised. According to Oystein, who believes his conscious was given back to him by God when the Nazis made him a revived, if God intervenes with Earth, Satan is allowed to do the same, so Satan forged Mr Dowling. Oystein also said that Mr Dowling set up base in London.