First It Was the Thin Mints Melee

Daily Mail Online: Don't make him angry... you won't like him when he's angry! Flash Gordon and the Incredible Hulk have to be separated by fans after the two actors get into a blazing row at London's Comic Con Actors 

Sam J Jones and Lou Ferrigno clashed at ComiCon event in London 

Pair argued while they signed autographs and posed for pictures at event 

Fan came between giant pair and told them to 'act like adults and grow up