Percival's first published work was in the monthly British comic Judge Dredd Megazine with a horror 'strange cases' tale written by Dave Stone.
The pair would later work together again for the British weekly comic 2000 AD on the Judge Dredd epic "Goodnight Kiss", another tale set in the radioactive wasteland of the Cursed Earth, where Judge Dredd is hunted by the assassin Jonni Kiss and the mutant Brotherhood of Marshalls.
Aside from his 2000 AD work on various stories and painted covers, including a Dredd one-off story "Crime Prevention" with acclaimed comic book author Mark Millar, Percival has also produced work for Marvel Comics, MTV, Wizards of the Coast, Upper Deck Entertainment, Boom!
His company also developed their own computer generated short films and Percival presented one of these successfully at the Cartoon Movie Festival 2002 in Berlin.
Percival is the author and illustrator of Legends: The Enchanted,[1] an original graphic novel, to be adapted into a feature film by Ron Howard's Imagine Entertainment.