DC COMICS: DC Animated Universe Bio Ghoul

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Ghoul was one of the Jokerz who followed the rejuvenated Joker. He was heavily into techno-goth music and has adapted the horror look into his costume. Ghoul was never without his plastic Halloween pumpkin which he kept filled with a number of monster-inspired weapons and tricks. He was usually paired up with Woof before being defeated by Batman and arrested by the police.

BIO:
Stewart Winthrop was born into a wealthy family, but ran away to join the Jokerz for kicks. He joined a sub-gang of the Jokerz under the control of the Joker. He served as the group's techie, manning the computers and technical equipment.22During the Heist at Gotham Shipping, Ghoul attempted to attack Batman, but was knocked out a few times. The rest of the Jokerz later managed to recover Ghoul and Woof when their heist was foiled by Batman. In the aftermath, Joker tasked Ghoul to locate another systems scanner to make up for the one they lost in the earlier heist on their database. Ghoul managed to locate a list of the only other places to find the cutting-edge systems scanner that they are searching for: including Wayne Enterprises, which had tight security. Ghoul, during the heist (which Woof and Dee Dee managed to cause a distraction), waited outside of the Security post until they were called and, donning a gas mask, hurled a gas grenade to immobilize security. Chucko and Ghoul then managed to recover the device in question.22The Jokerz were later dispatched by Joker to kill Terry McGinnis. Ghoul held Dana Tan hostage, although she briefly got free by stomping his right foot. Ghoul then "let go" of Dana by throwing her off the ledge, inflicting serious injuries on her in the process and would most likely have been killed by the fall had Terry not caught her. He was later knocked out into submission.22Ghoul and the other Jokerz were later dispatched to tie up a loose end by eliminating Jordan Pryce. When Batman cornered them on the ship, Ghoul used his Jack-o-lantern bucket to break the window for an alternate means of escape for the gang.22When the Jokerz fought Batman at their hideout, Ghoul attempted to sneak attack Batman after Woof was driven away by Ace, but Batman managed to give him a surprise punch while facing away from him, knocking him out. He was presumably arrested afterwards.

ALTERNATE TIMELINE:
In the alternate future created by Chronos, he was upgraded to have a robotic buzz saw implated in place of his arm, and was shown to be able to retract that and swap between his arm and the buzz saw. Ghoul, along with rest of Joker's Jokerz, were the "security" of Chronos and contracted to kill the Justice League (Batman, Green Lantern, and Wonder Woman) but was interrupted by the JLU (the second Batman, Static, and Warhawk). Later, Ghoul was interrogated by the original Batman then by an elderly Bruce Wayne.