Mark Millar's London-based comics convention will return in May for its second outing.
"The Kapow! Convention in London was genuinely the best con I've ever been to," Millar told Comic Book Resources.
"Everybody from John Romita Jr to Bryan Hitch to Jonathan Ross said they had an amazing time, sending [co-organisers Lucy Unwin and Sarah Unwin] really lovely notes for all their hard work.
"It was like a wedding in a weird way. Guys I love that I hadn't seen in ages like Brian Bolland or Kev O'Neill with a lot of the newer guys I'm friendly with like Nick Spencer and Paul Cornell gave the whole thing a real family feeling.
"The location was brilliant, as it should have been as it cost us a fortune to hire. But it was worth it as it was so central and the atmosphere was really amazing. It was huge and the best lineup of A-list comic names I've ever seen in the UK. But also weirdly intimate as you could chat to Leinil Yu or Frank Quitely when you were buying a coffee in the cafe."
The previous event featured a screening of Attack the Block and an exclusive preview of Kenneth Branagh's Thor.
Kapow! 2012 will be held on May 19 and 20 at the London Business Design Centre in Islington.