John Grayson - Earth 3 - Justice League

The late husband of Mary Grayson, the father of Richard and Rachel Grayson and an acrobat for the Graysons Circus, John Grayson, "inherited" the circus after murdering the previous owner, Anthony Zucco. 

Now in control of a highly successful international circus, he would use it as a front for money laundering, eventually putting him in touch with Owlman whenever they were visiting Gotham. 

John was eventually killed by Wayne, who had taken a shine to Richard and hoped that by orphaning the teen, he could replace his late brother.