He was a British TV personality from the 60-s and 70-s, he used his position to sexually assault a huge number of children, most of whom only came forward after his death in 2014.
Just for a bit more info, he had a thing called Jim'll Fix It where children wrote him letters asking for him to "fix it" so they could do loads of things, like meet certain celebrities or ride in tanks, that kind of thing. It was like the Make A Wish Foundation but for people who weren't dying.
Jimmy Saville, he has been on British TV character for a long time, everyone loved him and he was known has a really nice guy who helped people. But when he died it emerged he sexually abused a lot of children and used his fame to hide it.
''No little timmy glues to your crotch'' it was the only think i could think of when i saw the ending.Source is hellsing abridged by alucard i might typo few words from the quotoes