And it's YOUR chance to be world record holder with them.
Bosses today urged families to get their favourite superhero costume on to be a part of a Guinness World Record attempt for the most people dressed as superheroes and help raise cash for charity.
They want more than 2,000 people to take part and with the event already heading towards a sell out....WHAM, BAM, POW!!! The world record is on.
To take part superhero fans were today being urged to get your tickets, now limited, to Yorkshire Cosplay Con at Sheffield Arena this weekend - dress up as a superhero and have your photo taken on entry, to verify your entry then listen out for a special announcement inside the Arena at around 1.30pm on Saturday.
A short video clip will then be filmed to prove it happened.
But the costume police will be on patrol to ensure fans are properly dressed for the world record action.
A recognised superhero is one that that has been used in a published book, comic, television programme or film. But for this attempt does not include Anime.
To qualify, each costume must be a full head-to-toe representation of the chosen superhero.
The attempt is open to participants of all ages but it can take several months to be officially verified by Guinness World Records.
This is a fundraiser managed by Hallam FM’s Cash for Kids charity, which supports sick and disadvantaged children across South Yorkshire. For more details CLICK HEREYorkshire Cosplay Con, now in its sixth year, is taking place on Saturday and Sunday, June 11 and 12.
It is an action fuelled, family friendly, geek convention, where fans dress up as characters from film, TV, popular culture, anything that can be imagined.
Cosplaying - or Costume Play - is for everyone; from little children in fancy dress, to adults who want to embrace an alter-ego and people who want to pretend to be someone else for a day, or just people who like to dress up.
From professional costumers, to handcrafted costumes that have taken years to perfect, a whole array of wonderful characters, a collection of which you could never imagine coming together in any other setting, will be at the event.
There will be a stage schedule with a variety of performances, plus a selection of stalls with all sorts of geeky, quirky and unusual items.
Over the weekend there will be a range of guests from TV and Movies, as well as authors and graphic novelists. A wide range of activities are planned that are suitable for the entire family, including workshops, card and video gaming events, roleplay games, a kids cosplay competition on stage. plus more.
From humble beginnings with the intention of bringing like-minded people together, it has grown to be one of the largest, most popular, events in the Yorkshire calendar and has been listed as one of the top ten must see biggest events of 2016.
A Yorkshire Cosplay spokesman said of the world record bid: "We will collate as much evidence as possible to provide to them to prove that the event took place and if the record was broken.
"Whatever the outcome from this Guinness World Records decision is final. They are entitled to disqualify individual participants or the entire attempt."
"We want to help Cash For Kids raise £2,000. A minimum £1 donation per person taking part can help do this. You can make the donation as you have your photo taken on entry at their desk. Photos taken on the day will be available after the event."
Tickets for Yorkshire Cosplay Con 2016 start from only £9 for adults and £7 for children, available in person at the Arena Box Office, by phone on 0114 256 5656 and online at www.sheffieldarena.co.uk