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US actor George Clooney and his wife Amal Alamuddin leave the Aman Hotel on September 28, 2014 in Venice, a day after their wedding. Image Credit: AFP

Newly married George Clooney surprised fans with an appearance at New York Comic-Con on Thursday.

Fresh off his September 27 wedding to British human rights lawyer Amal Alamuddin in Venice, Italy, Clooney made a cameo on the Javits Center stage during a panel discussion for the upcoming Disney fantasy film, Tomorrowland.

To thunderous applause, Clooney told fans that it wasn’t lost on him “that I’m spending my honeymoon at Comic-Con”. He joked that after his widely panned Batman & Robin, he had been “de-invited” from Comic-Con: “Sorry about the nipples on the suit,” he said.

Disney premiered a teaser trailer at the event, a smaller, east coast edition of the sprawling Comic-Con in San Diego. Directed by Brad Bird and starring Britt Robertson, Tomorrowland is due out May 22, 2015.

Meanwhile, his new wife will advise Greece in its attempt to get the Parthenon Marbles back from the UK.

The barrister, who married actor George Clooney in Venice last month, will visit Athens next week to give legal advice to the Greek government.

Alamuddin Clooney’s firm, Doughty Street Chambers, said Thursday that she and attorney Geoffrey Robertson would meet Prime Minister Antonis Samaras and other officials.

The fate of the 2,500-year-old marbles, originally part of the Parthenon temple, is a longstanding issue between Britain and Greece.

The friezes were taken by British diplomat Lord Elgin 200 years ago and now are exhibited in the British Museum.

In February, George Clooney touched a nerve in Britain by suggesting the country should consider returning the marbles to Greece.