Stephen Shamus, President of ACE Universe, is the longest tenured show runner of Comic Cons in the world. He has produced over 175 Comic Cons events in many different cities, many of which were the largest scale in the region. He has booked thousands of celebrities, tens of thousands of artists and writers, and played host to millions of happy fans. He has worked with many international global box-office stars including Gal Gadot, Chris Evans, Chris Hemsworth, Whoopi Goldberg, Danai Gurira, Henry Cavill, Anthony Mackie, Tom Holland, Rosario Dawson, Michael J. Fox, Norman Reedus, David Duchovny, Gillian Anderson and Tom Hiddleston.