He is voiced by Keegan-Michael Key.
He is stronger, smarter, and faster than Jack Kardashian himself. He is almost very hard and unable to beat, since Jack Kardashian has lost to him several times in the past. His main target is Jack and tries to kill him to take over the world and rule it for the rest of eternity. He is even harder than Daleks or Rentro. The only way to beat him is by using lots of time and effort, Jack needs to be really smart and head-strong if he is going to beat Bad Guy. He has to be very fast by his feet and smart enough to know where he is.
He first appears, arrives at the spooky castle, having a diabolical scheme to put a stop to the world. His assistant Rentro came to him, when he asked him to finish his report of the potion. Rentro said he didn't yet, because he's gone pity of the book he read. Bad Guy reminded him that he had a plot to build an invention that will destroy the people (or cartoons) in the world. Rentro doesn't think it would, because Eric thinks Bad Guy's a mean man, and he was. He then made Rentro get back to work to finish reporting the potion.
After PC Guy steals the toy, he was arrested for shoplifting. When Eric arrived at Walmart, she claimed that she about started looking for him and that he should come into her office. Whilst working on her teeth, Bad Guy stated that PC Guy was a malfunction and brought forth guards. The next day, he told Eric that they would kill PC Guy, causing him to flee.
Later, Bad Guy asked Rentro the remote to show him his latest invention. His invention was the Dalek-Septor 9000.2, which will be for exterminating the investable cartoon beings of intelligent lifeforms they'll find. Rentro thinks that invention might be a good way to destroy Eric. Bad Guy tested his invention. When it woke up, he interacts to exterminate, and exterminated the water jug. Rentro was surprised to that invention, and he told him that PC Guy is a Stinkerputt and sholled by Eric and Victor. They'll use it to destroy the cartoons that'll be very specific. He orders his cartoon minions to kill Eric.
Bad Guy and Rentro confronts Eric and found out it was time for his own revenge on PC Guy. He also kidnaps and arrest the Toons and stucks Timon, Lisa Simpson, and Brian Griffin on top of Mt. Rushmore, ready to have his own revenge. Bad Guy was supposed to make him go to jail, but he's not Shoplifting at this time. PC Guy was scared of him, and quickly drove away in his car. Bad Guy went to his car with the Dalek-Septor 9000.2 to exterminate him during the chase. Jackashay later came to save the day, and he destroyed the Dalek-Septor with his laser eye powers.
Bad Guy's car then slid off the road and crashed into a big tree. Jackashay came to him for his final confrontation for calling PC Guy a Shoplifter. Finally, Jack goes into a uncontrollable rage and somehow finally beats Bad Guy in a matter of seconds without Bad Guy even landing a hit on him, he was then sucked up and captured by a super-microscopic black hole ball, but he destroys a ball by throwing a rock and accidentally destroys the Dalek-Septor. He was last seen caught by the police officers.
It is unknown what happened to Bad Guy afterwards, but in the deleted scene, he was arrested as the punishment for his crimes during a failed attempt to destroy the world, and then put in a cell where PC Guy is.
As his name suggests, he is a evil, cunning, arrogant, judgemental, stubborn, sadistic, manipulative, cruel, mean, lazy, destructive, seflish, unkind, hateful, mean-spirited, rude and abusive man who would do anything to rid the world of all cartoon characters (due to his terrible past) as he sees them as making the children weak and able to swearing bad words.