The convention draws more than 30,000 people each year, making it the largest genre attraction in the Southeast. But Dragon Con founder Ed Kramer says the group that bought his Atlanta convention is cheating him on revenue proceeds, and that the concept is being run into the ground. Kramer filed the suit in a superior court in Fulton County, Georgia, against Robert Patrick Henry. In the suit, Kramer claims Henry’s Las Vegas misfire cost him revenue, and that Henry deceived Kramer, convincing him to sell his majority stake in the convention, according to the Atlanta Journal-Constitution. Henry has yet to return a late-night weekend request from Airlock Alpha for comment. Kramer, on the other hand, is demanding a jury trial, and is seeking unspecified damages. However, if the case does go to …