Tens of thousands of comic book fans decked out in fancy dress gathered in London today for one of the UK 's biggest celebration of animated culture . The London Super Comic Book Convention , which kicked off last today , saw fans donning elaborate and often skimpy costumes in homage to their comic book favourites . Comic super-fan and television presenter Jonathan Ross was among the celebrity guests for day one alongside Storage Wars ' Sean Kelly and John Romita Junior- son of comic book legend by the same name- who draws for DC comics . There were a number of tributes to Guardians of the Galaxy 's tree-like character Groot and characters from the Lego Movie . Among the best-dressed were also a trio who posed as Batman and his nemeses the Joker and Harley Quinn . A total of 25,000 fans are expected to pay the Excel Centre , in east London , a visit over the course of the event , which lasts until tomorrow . The annual event , now in its four year , is the biggest comic book themed event in the UK , and the third for pop culture . One of the event organisers , Gary Morris , said : 'It 's been an incredible first day . The atmosphere has been amazing and the level of costumes has been out of this world . 'People have really brought their A-game this year . 'The market for these sort of events is definitely growing . Just look at the films which are in the box office at the moment- they 're all based on comic books . We like to look at the heritage that led to that . ' Mojo Jones dressed as Black Cat from Marvel comic book poses for a photograph at the London Super Comic Convention . Groot and his little saplings : A fan dressed as Marvel 's Groot from Guardians of the Galaxy queues with his children . Sexy superheroes : L-R : Penny Bune as Mary Jane from Spiderman , Lise as Poison Ivy from Batman and Hannah Brown in a Spider Suit as Black Cat . Comic fans dressed in a dazzling array of costumes queue at the London Super Comic Convention . Among the best-dressed at the comic convention was a trio who posed as Nite Owl , The Joker and Harley Quinn . A create tribute to one of the characters from the hugely successful Lego Movie- the film inspired several costumes at this year 's event . Fans dressed as Lego-styled comic book heroes including X Men 's Wolverine and DC comics ' Wonder Woman . Bit nippy Leonidas ? This bare-chested fan dressed up as King Leonidas from 300- a historically inspired 1998 comic book limited series . Leonidas and the Queen of Sparta from 300 , which was later made into a film , on their way to London 's Excel Centre for the convention . Batman fan Vlod in costume as The Joker at first day ofthe London Super Comic Convention at Excel . Ashley ( surname not given ) in costume as the Marvel character Medusa at the London Super Comic Convention at ExCel , London . Visitors stop for a bit of lunch at the annual event , now in its four year , which is the biggest comic book themed event in the UK . Feline fancy : Dressed in matching costumes , the Thundercats were on the prowl at the convention centre . Killer heels : These red pistol shoes were on show at the event which organisers described as being the biggest to date . Cosplay as supervillian Harley Quinn , the girlfriend of the Joker and evil foe to Batman in the DC comics . One fan appeared to arrive as a steam punk-styled monster with hideous blue mask , black hat and goggles and intricate time-piece themed outfit . A female take of one of the Avengers crew Captain America , one fan dons the American Flag themed costume and shield . A lot of Lycra : Friends arrive dressed in tight-fitting costumes at the London Super Comic Convention . Guardians of the Galaxy 's Groot character was a popular choice among those who attended the first day of the event . In one fan 's particularly impressive tribute , he has Groot 's trusty sidekick Rocket Raccoon on his back . A man dressed as super villain Bane , another of Batman 's nemeses , complete with the character 's intricate face mask . A convention classic , a man dresses up as his hero Jack Sparrow from Pirates of the Caribbean complete with dreadlocks and pirate boots . A comic fan devotee dressed at The Bride from Kill Bill , a character which was originally played by Uma Thurman in the Tarantino films . A comic fan has a break while dressed in a hood depicting comic book super hero Iron Man at ExCel , London . A Star Wars fan dresses up as a the Tatooine-based Jawa character from the immensely successful franchise . Do n't lose your head : A man wearing a fluffy Panda costume takes off the head to catch a breath of fresh air outside the centre . Texting Mary Jane Spiderman ? A man dressed as the arachnid-themed superhero at the Super Comic Convention .
More than 25,000 will attend the London Super Comic Book Convention . TV presenter Batman and Storage Wars ' Sean Kelly among guests . Fans dressed up as their favourite characters such as Jonathan Ross and Joker . Jack Sparrow , Groot and Bane were also popular costumes this year .