Sean Cregan

Under his real name, John Rickards writes mostly US crime fiction. But he was once part of a terrifying gestalt entity formed, Power Ranger-style, with writer of SF urban thrillers "Sean Cregan". Together they became MegaWriter and fought villains in the rubble of humanity's last cities. Tragically, Cregan was eventually lost somewhere in the smoke, never to rise again.

Which is another way of saying "he also wrote under the pen name 'Sean Cregan' for Hachette but doesn't much any more".

You can find him at namelesshorror.com or on Twitter as @Nameless_Horror.