John Edward Szeles, better known by the stage name The Amazing Johnathan, was an American comedian and magician. His act was mostly composed of hijinks, interaction with one specific audience member, and a few legitimate magic tricks. From 2001 to 2014, he was a year-round headliner in Las Vegas. Self-described as the "Freddy Krueger of Comedy", Szeles performed wearing his ever-present headband, and his shows frequently used gore; for example, pretending to suck on his own hanging eyeball, cutting his wrists, and skewering his own tongue. He was also good friends with fellow performer Criss Angel, and helped Angel perform a variety of illusions, most notably during his three guest appearances on Mindfreak.
In March 2007, it was reported that Szeles was diagnosed with "a serious heart condition". The performer's website identified the condition as cardiomyopathy and went on to assert that, due to a combination of weight loss and blood thinners, he was doing well.
However, his heart condition worsened, and Szeles announced that he would effectively retire, performing a final show in Toledo for the general public, and then for members of The Magic Castle on June 30 and July 1, 2014. On November 5, 2014, in front of a live audience on ENT Speaks, he stated that he had a year to live. However, Szeles defied his initial terminal prognosis. In 2017, he played several shows across the United States.
Szeles died in his sleep at his home in Las Vegas on February 22, 2022, at the age of 63.