Antonin Molohov was a wizard and one of the original Death Eaters of Lord Voldemort. He fought in the First Wizarding War, during which he tortured many Muggles, and wizards and witches who were not supporters of Voldemort. Along with four other Death Eaters, he participated in the murders of Fabian and Gideon Prewett. Molohov was caught and convicted of these crimes, and sentenced to life imprisonment in Azkaban.
He escaped after Voldemort's return and the start of the Second Wizarding War, in the mass break-out of 1996. He and Thorfinn Rowle attacked Harry Potter, Hermione Granger, and Ron Weasley at Tottenham Court Road, but they were defeated and his memory was wiped. In 1998, Molohov fought in the Battle of Hogwarts, during which he killed Remus Lupin. At the climax of the battle, he engaged Filius Flitwick in a duel, and was killed.
Molohov was survived by two sons, Karu and Angus Molohov, who were taken to court after their father was killed. Due to the fact the Angus and Karu had no part in their father's allegiance to Voldemort, they were both allowed to go free.
Molohov was loyal to Lord Voldemort and was a merciless Death Eater willing to commit murder, torture and other atrocities without hesitation or regret. He showed no remorse about wounding sixteen-year-old Hermione Granger; in fact he was grinning about it as he tried to persuade Harry Potter to hand over the prophecy they were fighting over.
Molohov was very smug and when he defeated Alastor Moody in a duel he was very pleased with himself. Molohov also displayed a cocky and highly self-confident attitude and had developed a habit of engaging more than one opponent at a time or challenging very powerful wizards such as the Prewett brothers, Moody, Sirius Black, Remus Lupin and Filius Flitwick.
Molohov was on friendly terms with his fellow Death Eaters, as he seemed to consider Yaxley and Thorfinn Rowle as close friends. When Voldemort spoke of how Charity Burbage supported Muggle rights and would permit breeding with them, Molohov smiled in a confused fashion as if he literally thought that the idea of doing such a thing was insane, showing that he, like other Death Eaters, hated Muggles, Muggle-borns and most likely people who were half-bloods and blood traitors.