Williams is perhaps best known for creating (with Henry Flint) the 2000 AD series Low Life, detailing the adventures of the undercover judges known as the Wally Squad, and for writing the Low Life section of the three-way crossover Trifecta. He created the characters of Aimee Nixon, Eric 'Mortal' Coil, dishevelled hobo-cum-hero Dirty Frank and everybody's favourite razor-toothed saurian monster Sensitive Klegg (with D'Israeli). Williams has also done a lot of work for Marvel Comics, and in 2014 began co-writing the Doctor Who: The Eleventh Doctor series for Titan Comics.
On Judge Dredd's sexuality
From the Daily Telegraph: "Writer Rob Williams said Dredd's sexuality - whatever it is - was buried beneath his love for the law. He said: 'Although, can you imagine what would happen if that repression ever fell away, just for an instant? Sure, Dredd could be gay. You can't look at the original costume design of leather and chains and not see a fetishistic edge there. But Dredd's feeling are so deeply hidden, he is extremely unlikely to ever let them show.'"